Doc #7 — Agricultural and Industrial Consumables Management

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ECONOMIC JUSTIFICATION

Programme staffing requirements

Centralised management of agricultural and industrial consumables is not a passive inventory exercise. It requires active coordination, technical assessment, and allocation decision-making across a diverse and geographically dispersed supply chain. The following estimates the person-year commitment required for competent execution.

Role	Phase 1 (Year 1)	Phase 2 (Years 2–5, per year)	Notes
National Consumables Coordinator	1–2	1	Senior logistics/supply chain capability; coordinates across government, industry, and regional bodies
Fertilizer programme managers	3–5	2–3	One per major fertilizer category (nitrogen, phosphate, potassium, specialty); interfaces with Ballance, Ravensdown
Agricultural consumables advisors	4–6	3–4	Animal health, herbicides, pesticides; interfaces with veterinarians, agronomists, rural retailers
Industrial consumables inventory specialists	4–6	2–3	Welding consumables, lubricants, abrasives, adhesives, gases; interfaces with NZ Safety Blackwoods, BOC, regional distributors
Regional allocation coordinators	10–15	8–12	One per region; manages local requisition, storage inspection, and distribution
Storage and logistics coordinators	5–8	3–5	Oversees warehouse-level storage conditions, transfer logistics, shelf-life monitoring
Data and inventory analysts	2–3	1–2	Aggregates inventory data from distributor systems into national picture; interfaces with Doc #8 census operation
Total	~29–45	~20–30

These figures assume that major distributors (Farmlands, PGG Wrightson, BOC, NZ Safety Blackwoods) continue to manage their own warehouses and inventory systems under government direction — the government’s role is coordination and allocation, not wholesale warehouse management. If distributor cooperation breaks down, person-year requirements increase substantially.

Cost of not managing consumables centrally

The alternative to centralised management is not orderly decentralised management — it is uncoordinated competition for finite stocks, with outcomes that are both inequitable and economically destructive.

Documented failure modes without central coordination:

• Hoarding by large operators. Farms and businesses with storage capacity and cash liquidity will purchase and stockpile consumables at the expense of smaller operators with less purchasing power. This has occurred in previous supply shocks (COVID-19 fertilizer and chemical disruptions, 2021–22). In a severe crisis, the pattern is amplified.
• Misallocation by geographic accident. Stocks located near major distribution centres will be consumed first; remote areas will experience shortages regardless of agricultural productivity or food production value. High-value dairy land in Canterbury may go unfertilized while lower-value land near Christchurch depots is over-supplied.
• Price spiral and speculative hoarding. Without price controls and allocation frameworks, consumable prices spike and speculators hold stock off-market waiting for higher prices. Every month of delay in requisition allows this dynamic to worsen.
• Deterioration through improper storage. Consumables stored by parties who lack technical knowledge of storage requirements (particularly low-hydrogen welding electrodes — see Section 9.3 — and moisture-sensitive herbicide formulations) will degrade without the systematic inspection and condition monitoring that centralised management enables.
• Loss of visibility. Once stocks disperse to on-farm and workshop stores through private purchase, the national inventory is effectively invisible. Allocation planning becomes guesswork.

Estimated loss from unmanaged distribution: If 20–30% of in-country fertilizer stock is hoarded, misallocated, or wasted due to improper storage — a conservative estimate based on historical supply shock behavior — the food production impact over the first 3–5 years is substantial. A 20% reduction in effective fertilizer allocation translates directly into lower pasture production, reduced carrying capacity, and lower food calorie output. At NZ’s pre-event dairy production scale (approximately 20 billion litres of milk annually), a 5% reduction in production attributable to fertilizer misallocation represents roughly 1 billion litres annually — or, in direct food terms, caloric output supporting tens of thousands of people over multiple years.¹

The same logic applies to animal health chemicals. Unmanaged distribution of anthelmintic stocks concentrates them with large operators who can pay; small farms lose young stock to parasites at elevated rates. The resulting reduction in NZ’s sheep and cattle herd reduces protein production over the following years.

Breakeven timeline

The 29–45 person-year commitment in Year 1 is approximately equivalent to the output of a medium-sized government department team. At any reasonable valuation of food production prevented from waste or misallocation, the programme breaks even in months, not years.

A conservative estimate: if centralised management recovers or correctly allocates an additional 50,000 tonnes of fertilizer that would otherwise be hoarded or misused — perhaps 10–25% of total in-country stock — and that fertilizer supports additional pastoral production, the food value attributable to correct allocation is measurable in hundreds of thousands of sheep-equivalents or tens of millions of kilograms of milk. Against this, the cost of the coordination programme is negligible.

Breakeven point: Effective consumables management pays for itself within the first growing season if it prevents even moderate hoarding and misallocation. The programme is not economically borderline — it is strongly positive. The question is not whether to do it but whether the government has the administrative capacity to execute it at the same time as other first-month priorities.

Opportunity cost

The 29–45 persons deployed to consumables coordination in Year 1 are not available for other activities. This is a real tradeoff. However, the opportunity cost is lower than it appears, because:

1. Much of this workforce is not interchangeable with other emergency priorities. Agricultural supply chain specialists, fertilizer company staff, and industrial logistics personnel have skills that are most valuable specifically in this role. They are not suitable substitutes for emergency medical staff, infrastructure engineers, or food distribution coordinators.

2. Much of the work relies on existing industry staff continuing their current jobs under government direction. The primary workforce for this programme is not new hires but Farmlands field staff, Ravensdown agronomists, BOC gas technicians, and NZ Safety Blackwoods warehouse managers — people already in place, with institutional knowledge of the supply chain. The marginal government staffing commitment is coordination and oversight, not wholesale replacement of industry functions.

3. The alternative (no coordination) does not free up these people for other work. Without a coordination programme, supply chain industry staff will continue working, but in a market that is collapsing and misallocating. They are not released to other priorities — they are working on a less productive version of the same task.

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1. NZ’S AGRICULTURAL AND INDUSTRIAL CONSUMABLE SUPPLY

1.1 The distribution landscape

NZ’s agricultural and industrial consumable supply chain is concentrated through a small number of major distributors, which is advantageous for requisition:

Agricultural inputs:

• Farmlands Co-operative: NZ’s largest rural supplies cooperative, with stores and distribution centres nationwide. Stocks fertilizer, agricultural chemicals, animal health products, fencing, hardware.²
• PGG Wrightson: Major rural services company with branch network across NZ. Similar product range to Farmlands.³
• Ballance Agri-Nutrients: NZ’s major fertilizer cooperative. Manufactures urea at the Kapuni plant (Taranaki) and superphosphate at the Mt Maunganui works. Also imports and blends other fertilizer products.⁴
• Ravensdown: The other major NZ fertilizer cooperative. Manufactures superphosphate at plants in Napier, Christchurch (Hornby), and Dunedin (Ravensbourne) from imported rock phosphate. Also distributes agricultural chemicals and lime.⁵

Industrial supplies:

• NZ Safety Blackwoods: Major industrial and safety supplies distributor. Welding consumables, abrasives, PPE, adhesives, sealants, fasteners.⁶
• BOC (Linde Group): Industrial gas supply — oxygen, acetylene, argon, CO₂, nitrogen. Manufactures some gases domestically through air separation.⁷
• Wurth: Fasteners, adhesives, sealants, chemical products for workshops.
• ToolShed / TradeTools / specialist distributors: Hand tools, power tool consumables, cutting discs, drill bits.
• Dulux / Resene / specialist coatings distributors: Paint, protective coatings, solvents, thinners.
• Regional automotive and engineering suppliers: Bearings, belts, filters, hydraulic fittings, seals, hoses.

The key structural advantage: Because distribution is concentrated through identifiable companies with existing warehouse infrastructure and inventory systems, the government does not need to locate and inventory thousands of dispersed small stocks. Securing the warehouse-level stocks of 15–20 major distributors captures the large majority of wholesale inventory. Retail and on-farm stocks are smaller, more dispersed, and less urgent.

1.2 Import dependency

NZ’s domestic manufacturing of agricultural and industrial consumables is limited. Of the major categories:

Category	Domestic production	Import dependency
Urea fertilizer	Ballance Kapuni plant — nameplate capacity approximately 260,000 tonnes/year; actual output varies with maintenance and gas supply8	Partially domestic. NZ also imports urea to meet total demand.
Superphosphate	Ravensdown and Ballance plants manufacture from imported rock phosphate	Raw material (rock phosphate) is 100% imported. NZ has limited domestic phosphate deposits (Chatham Rise, small land deposits).
Potassium fertilizers	None	100% imported
Herbicides/pesticides	Some formulation and blending from imported active ingredients	Active ingredients almost entirely imported
Animal health products (drenches, pour-ons)	Some local formulation; Merial/Boehringer Ingelheim has NZ packaging operations	Active ingredients largely imported
Welding electrodes	Limited or no domestic manufacture	Imported
Industrial gases	BOC operates air separation units in NZ (oxygen, nitrogen, argon from air)	Partially domestic. Acetylene produced from imported calcium carbide or can be produced from NZ limestone + carbon. Specialty gases imported.
Paints and coatings	Resene and Dulux have NZ manufacturing plants using largely imported raw materials (pigments, binders, solvents)	Raw materials mostly imported
Adhesives and sealants	Some local manufacture from imported feedstocks	Feedstocks mostly imported
Abrasives	None significant	Imported
Lubricants	None (see Doc #34)	100% imported as finished product or base oil

The fundamental picture: NZ manufactures some finished products from imported raw materials (superphosphate from rock phosphate, urea from natural gas, paint from imported pigments and binders) and imports the rest as finished goods. When imports stop, domestic manufacturing continues only as long as imported raw material stocks last — except for the Kapuni urea plant, which uses NZ natural gas as feedstock, and BOC’s air separation, which uses ambient air.

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2. FERTILIZER: THE MOST CONSEQUENTIAL CATEGORY

2.1 Why fertilizer matters most

NZ’s pastoral agriculture — the foundation of the food supply — depends heavily on applied fertilizer. Under normal conditions, NZ applies in the range of 1.5–2 million tonnes of fertilizer per year, of which roughly 350,000–450,000 tonnes is urea (nitrogen), 700,000–900,000 tonnes is superphosphate or phosphate-based products, and the remainder is potassium, lime, and specialty blends.⁹ These figures require verification from Ballance and Ravensdown directly, but the order of magnitude is well-established.

Fertilizer matters because NZ’s pastures — particularly high-producing dairy pastures — have been developed and maintained under regular fertilizer application for decades. Phosphate levels in many dairy soils are high because of sustained application, which provides a buffer. But nitrogen (urea) is consumed by the plant within weeks of application and provides no lasting soil reserve. The distinction is important:

• Phosphate: NZ’s intensively farmed soils carry substantial accumulated phosphate reserves. Stopping phosphate application does not cause immediate production collapse — soil reserves can sustain adequate growth for several years on well-fertilized land, with gradually declining production.¹⁰ The timeline depends on soil type, current fertility status, and stocking rate. On high-fertility Waikato dairy land, the buffer might be 3–5 years before production declines become acute. On lower-fertility hill country, the buffer is shorter.
• Nitrogen (urea): Provides an immediate growth boost but does not accumulate. Stopping urea application causes a more immediate production decline, particularly on dairy pastures that depend on urea-boosted growth rates. However, white clover — the legume component of NZ’s pasture mix — fixes atmospheric nitrogen biologically. Under reduced stocking rates (which nuclear winter will require anyway, per Doc #74), clover’s contribution becomes proportionally more important and can partially offset lost urea inputs.¹¹
• Potassium: Soil reserves vary. Some NZ soils are naturally well-supplied; others are deficient. Like phosphate, accumulated reserves provide a buffer.

The net assessment: Losing all fertilizer inputs would reduce NZ pastoral production significantly — estimates range from 20–40% decline over 3–5 years, on top of nuclear winter effects (Doc #74) — but it would not eliminate production. The question is how to allocate finite fertilizer stocks to maximize food production during the critical Phase 1–3 period while soil fertility management transitions to biological systems (Doc #80). Traditional Māori māra kai (food garden) systems maintained soil productivity through organic amendments — fish offal, composted plant material, and ash — calibrated to NZ soil types and seasonality; practitioners with this knowledge should be engaged through the skills census (Doc #8) to support community-scale horticulture where imported fertilizers are unavailable.¹²

2.2 Domestic fertilizer production

Ballance Kapuni urea plant: Located in Taranaki, this plant uses natural gas from the Kapuni field as feedstock to produce urea (CH₄ → NH₃ → urea). Capacity is approximately 260,000 tonnes of urea per year.¹³ This is NZ’s most valuable domestic chemical manufacturing asset for agricultural recovery. The plant’s operation depends on:

• Natural gas supply: The Kapuni gas field is the primary feedstock source. NZ’s total natural gas reserves are finite but substantial — remaining recoverable reserves as of recent estimates are in the range of 1,500–2,500 petajoules, with Kapuni being one of several producing fields.¹⁴ The urea plant’s gas consumption is a fraction of NZ’s total gas use, and with industrial demand collapsing post-event, gas allocation to urea production should be a high priority. At current plant efficiency, producing 260,000 tonnes of urea requires approximately 140,000–170,000 tonnes of natural gas (methane).¹⁵ NZ gas reserves can sustain this for decades, though pipeline maintenance and gas field operations require ongoing technical management.
• Catalyst and consumables: The ammonia synthesis step (Haber-Bosch process) uses an iron-based catalyst with a typical operational life of 5–15 years before replacement is needed.¹⁶ Catalyst replacement is currently imported. This is a long-term constraint — the plant can operate for years on its current catalyst charge, but eventual replacement requires either import (via trade with Australia or other regions) or domestic catalyst manufacture (difficult but theoretically feasible given the materials are iron oxide with promoters).
• Electricity: Required for compression and process control. Available under baseline grid assumptions.
• Maintenance parts and expertise: The plant is a complex chemical facility requiring specialized maintenance. Its workforce and spare parts inventory are critical assets.

Recommendation: The Kapuni urea plant should be designated a national strategic asset within the first week. Its workforce should be secured, its consumables and spare parts inventoried, and gas supply guaranteed. Continued urea production at any capacity is among the highest-value industrial activities in the recovery.

Superphosphate plants: Ravensdown and Ballance superphosphate works are simpler operations — they grind imported rock phosphate and react it with sulfuric acid. The constraint is rock phosphate feedstock, which is 100% imported. In-country stocks of rock phosphate at the manufacturing plants at any given time represent weeks to a few months of production.¹⁷ Once these stocks are consumed, superphosphate production stops unless:

• Chatham Rise phosphorite: A large marine phosphorite deposit on the Chatham Rise, east of NZ. The deposit is substantial — estimated at hundreds of millions of tonnes.¹⁸ Mining it requires marine dredging capability. Under pre-event conditions, environmental objections prevented mining. Under recovery conditions, those constraints change. However, developing marine phosphate mining is not a Phase 1 activity — it requires vessel modification, processing infrastructure, and probably 2–5 years to establish even basic extraction. It is a Phase 3+ prospect.
• NZ land-based phosphate deposits: Small deposits exist in the Clarendon area (Otago) and elsewhere, but these are limited in quantity and grade compared to NZ’s fertilizer demand.¹⁹
• Bone meal: NZ’s meat processing industry generates significant quantities of bone, which contains calcium phosphate. Bone meal has historically been used as fertilizer and contains approximately 20–25% phosphorus pentoxide equivalent.²⁰ Under recovery conditions, where every nutrient cycle matters, bone from meat processing should be systematically collected and processed for agricultural use. This provides a meaningful but partial substitute — nowhere near enough to replace imported rock phosphate at current application rates, but a genuine contribution.
• Seabird guano: Historically a major phosphate source globally. NZ seabird colonies produce guano, but the quantities available without devastating the colonies are limited and hard to estimate.²¹
• Sulfuric acid: Superphosphate production requires sulfuric acid. NZ does not currently have an independent sulfuric acid plant, though the fertilizer works have historically operated acid plants. NZ’s geothermal areas produce sulfur, and sulfuric acid production from NZ geothermal sulfur is feasible (Doc #113). This is a dependency chain that must be traced: no sulfuric acid means no superphosphate even if rock phosphate is available.

2.3 Fertilizer allocation strategy

The in-country fertilizer stock at the time of the event includes:

• Finished product at Ballance and Ravensdown distribution centres
• Product in transit and at regional depots
• Product already on-farm (farmers typically hold partial-season stocks)
• Raw material (rock phosphate) at the manufacturing plants

Estimate: Total in-country finished fertilizer stock at any given time is uncertain but likely in the range of 200,000–500,000 tonnes across all product types, heavily dependent on the time of year (stocks are highest pre-season, lowest post-application).²² This figure requires verification through the requisition inventory.

Allocation priorities:

1. Urea to highest-producing dairy land. Urea gives the fastest return in terms of food calories per kilogram applied. NZ’s highest-producing dairy pastures (Waikato, Taranaki, Canterbury under irrigation) convert urea into grass growth within 2–4 weeks. Under nuclear winter conditions, this response will be reduced but still meaningful. Domestic urea production from Kapuni should continue and be allocated to food-critical pastoral land.

2. Phosphate to lowest-reserve soils. Where soil testing data is available (and NZ has extensive soil testing records through the fertilizer cooperatives), prioritize phosphate application to soils with the lowest existing reserves, where the marginal return from applied phosphate is highest. High-fertility soils can coast on reserves for several years.

3. Reserve for arable cropping. Emergency crop expansion (Doc #76) — potatoes, brassicas, grain — requires fertilizer inputs. Arable crops are more responsive to nitrogen than pastoral systems and produce more calories per hectare. A strategic fertilizer reserve for cropping may produce more food per kilogram of fertilizer than pastoral application, depending on conditions.

4. No application to low-priority land. Extensive sheep and beef hill country, which receives lower fertilizer rates under normal conditions, should receive none under rationed conditions. This land will decline in productivity but can recover when fertilizer becomes available again.

2.4 Fertilizer urgency assessment

If the event occurs during or just before a fertilizer application window (typically spring for most pastoral land, with autumn applications common on dairy), the urgency of securing and allocating fertilizer stocks is measured in weeks. Missing the application window means the next season’s production is reduced. If the event occurs well before the next application window, there is more time.

Realistic timeline: Fertilizer stocks should be secured and the allocation framework established within 2–4 weeks of the event. This is behind fuel (hours to days) and food distribution (days) but ahead of most other consumable categories (months).

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3. AGRICULTURAL CHEMICALS

3.1 Herbicides

NZ’s agricultural sector uses significant volumes of herbicide, with glyphosate being the dominant active ingredient for pasture renovation, crop establishment, and weed control. Other widely used herbicides include MCPA, 2,4-D, dicamba, and various pre-emergent products.²³

In-country stocks: At any given time, herbicide stocks across distributor warehouses, rural retail outlets, and on-farm stores represent an uncertain but probably 6–18 months’ supply at pre-event application rates.²⁴ These stocks are stable in storage — most herbicide formulations have shelf lives of 2–5 years when stored in sealed containers at moderate temperatures, with some active ingredients remaining effective longer.²⁵

Depletion under rationed use: Pre-event herbicide consumption is driven largely by dairy pasture renovation and arable cropping, both of which contract under recovery conditions. With vehicle fuel rationed and aerial application grounded, spraying capacity drops regardless of herbicide availability. A reasonable estimate is that rationed consumption could be 20–40% of pre-event levels, extending stocks to 2–5 years.

Substitution pathways:

• Mechanical weed control: Pre-herbicide farming relied on cultivation, hand weeding, and mowing. These methods work but are far more labor-intensive. Under nuclear winter conditions with reduced labor availability (people redirected to other essential work), this creates a labor allocation conflict.
• Grazing management: Many weeds can be controlled through stocking rate and timing management. This is standard pastoral practice and does not depend on imports.
• Biological control: NZ already has established biological control programs for some weeds (ragwort, nodding thistle, gorse). These continue to operate without inputs.
• No substitute for pre-emergent herbicides in arable cropping without reverting to intensive cultivation, which increases fuel consumption and soil degradation.

Honest assessment: NZ managed productive pastoral agriculture before the herbicide era (roughly pre-1970s), so the loss of herbicides is not catastrophic for pastoral farming.²⁶ It increases labor requirements and reduces weed control effectiveness. For arable cropping, the impact is larger — modern no-till and minimum-till systems depend on herbicide for weed control, and reverting to cultivation is a meaningful step backward in soil management.

3.2 Pesticides and fungicides

NZ uses insecticides (primarily on horticultural crops), fungicides (cereals, fruit, vegetables), and various specialty pesticides. The agricultural sector’s total pesticide use is moderate by international standards due to NZ’s geographic isolation and relatively low pest pressure for many crops.²⁷

Key categories:

• Insecticides: Pyrethroids, organophosphates, neonicotinoids. Used primarily in horticulture and arable. Pastoral farming uses relatively little.
• Fungicides: Used heavily on cereals (wheat, barley), pip fruit, wine grapes. Loss of fungicides would significantly affect crop yields, particularly for wheat and barley.
• Molluscicides: Slug bait. Important for establishing new pasture and crops. NZ-producible alternatives (ferric phosphate — requires iron and phosphorus) exist but are not currently manufactured domestically. Ferric phosphate baits are less immediately lethal than metaldehyde-based products and require higher application rates, but are effective for slug control in arable and garden settings.²⁸

Depletion and substitution: Like herbicides, pesticide stocks are stable in storage and consumption under recovery conditions drops significantly as horticultural production contracts. Pastoral farming — which accounts for most of NZ’s agricultural land — uses relatively little pesticide. The main concern is arable cropping, where fungicide availability directly affects cereal yields. Without fungicides, wheat and barley yields in Canterbury and Southland could decline 15–30% due to increased disease pressure, though this figure is an estimate based on trial data comparing treated and untreated plots and could vary substantially with seasonal conditions.²⁹

3.3 Animal health chemicals

This is a critical category for pastoral farming. NZ’s livestock industry depends on:

• Anthelmintics (drenches): Internal parasite control. Cattle and sheep require regular drenching, particularly young stock. Major drench families: benzimidazoles, levamisole, macrocyclic lactones (ivermectin, moxidectin). Without effective drenching, young stock mortality increases significantly and growth rates decline.³⁰
• Pour-on and dip products: External parasite control (lice, flies, ticks). Important for animal welfare and productivity but less critical than internal parasite control.
• Antibiotics: Veterinary antibiotics for bacterial infections, mastitis treatment in dairy cows. These are also covered under pharmaceutical management (Doc #4).
• Bloat control: Products for managing bloat in cattle grazing clover-dominant pastures. Under recovery conditions where clover becomes more important for nitrogen fixation (Section 2.1), bloat risk may increase.
• Facial eczema prevention: Zinc supplementation and fungicide (sporidesmin-producing fungus control). Primarily a North Island issue.

Depletion timeline: Animal health chemical stocks at veterinary clinics, rural retailers, and on-farm represent months of normal use. Under reduced stocking rates (Doc #74), consumption decreases proportionally. Estimated effective stock life under rationed use: 2–5 years for most categories, though specific products (e.g., long-acting injectable ivermectin formulations) may deplete faster or slower depending on pre-event stock levels.

Substitution pathways:

• Grazing management for parasite control: Rotational grazing, mixed-species grazing (sheep and cattle together), and pasture spelling can significantly reduce parasite burdens without chemicals. These methods were the basis of livestock farming before modern drenches and remain effective, though they require more management skill and accept higher (but manageable) parasite loads.³¹
• Copper sulfate footbaths: For foot rot. Copper sulfate is a simple inorganic chemical that could be produced domestically if copper is available (Doc #70).
• Mātauranga Māori (traditional knowledge) approaches to veterinary alternatives: Specific rongoā preparations with antiparasitic and antimicrobial properties may reduce pressure on finite anthelmintic stocks in lower-priority cases. Direct application of traditional Māori animal management knowledge to introduced livestock species is limited — the tradition predates the species — but rongoā documentation in partnership with tohunga rongoā and veterinary researchers is warranted. See Section 11.3 for detail and the necessary caution regarding substitution for high-burden cases.
• Selective breeding for parasite resistance: A multi-year strategy. NZ’s sheep breeding industry has already made progress on breeding for internal parasite resistance. Under recovery conditions, breeding selection should heavily weight disease resistance and parasite tolerance alongside production traits (Doc #85).³²

Honest assessment: Loss of modern drenches would increase livestock mortality — particularly in young stock — and reduce growth rates and production. The impact is significant but manageable through a combination of stockpile management, grazing management, and breeding selection. NZ farmed livestock before modern anthelmintics were available; it can do so again, but with higher losses and lower per-animal productivity.

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4. WELDING CONSUMABLES

4.1 What NZ uses

Welding is a foundational maintenance and fabrication capability — virtually every repair job on agricultural equipment, industrial plant, or infrastructure involves welding. NZ uses:

• Stick welding (SMAW/MMA) electrodes: The workhorse of farm and general workshop welding. Mild steel electrodes (E6013, E7018) account for the majority of consumption. Specialty electrodes (stainless steel, hard-facing, cast iron) are smaller volumes but critical for specific applications.³³
• MIG/MAG wire: Solid wire (typically ER70S-6) and flux-cored wire for semi-automatic welding. Widely used in workshops, fabrication shops, and industry.
• TIG filler rod: Smaller volumes, used for precision and specialty welding.
• Oxy-acetylene consumables: Cutting tips, welding tips, hoses, regulators, flashback arrestors. Oxygen and acetylene gas.
• Brazing rod and silver solder: Smaller volumes, used for pipe joints, refrigeration, and precision work.

In-country stocks: The total NZ stock of welding consumables across distributors (NZ Safety Blackwoods, BOC, Cigweld, Lincoln Electric distributors, rural suppliers) and end users is not publicly quantified. A rough estimate based on market size: NZ’s welding consumable market is probably in the range of NZD 50–100 million annually, representing several thousand tonnes of electrodes and wire.³⁴ At any given time, distributor and retail stocks represent weeks to a few months of normal consumption. On-farm and workshop stocks add further volume — many rural workshops maintain significant electrode stocks.

4.2 Depletion under recovery conditions

Welding consumption changes dramatically post-event:

• New construction drops — less building, less fabrication of new products
• Repair and maintenance increases — keeping existing equipment running becomes critical
• Net consumption probably drops 40–60% from pre-event levels, as the reduction in new work outweighs the increase in repair activity. This estimate is based on the assumption that new construction and fabrication (the majority of pre-event welding consumable demand) largely ceases, while repair activity increases but does not fully offset the reduction.

At reduced consumption, in-country welding consumable stocks could last 1–3 years. This is an estimate subject to the usual uncertainties about actual stock levels.

4.3 Domestic production pathway

Stick electrodes (Doc #94): The basic stick electrode is mild steel wire coated with a flux mixture. NZ Steel (Doc #89) produces wire rod that can be drawn into electrode core wire. The flux coating is the challenging part — typical coatings contain combinations of rutile (titanium dioxide), cellulose, limestone (calcium carbonate), iron powder, potassium silicate, and other minerals.³⁵

NZ has some of these materials domestically:

• Rutile sand (titanium dioxide): NZ’s west coast ironsand deposits contain titanomagnetite, and rutile is found in NZ mineral sand deposits. The ironsand at NZ Steel’s Waikato North Head operation contains 7–8% TiO₂ (Doc #89). Whether this can be separated into usable rutile for electrode coatings requires investigation — it is not a straightforward extraction.
• Limestone: Abundant in NZ (Golden Bay, Waikato, Otago).
• Cellulose: Abundant — wood pulp from NZ’s plantation forests.
• Iron powder: Can be produced from NZ Steel wire by grinding or atomization.
• Potassium silicate (water glass): Producible from potassium carbonate (from wood ash) and silica sand.

Feasibility: Doc #94 addresses this in detail. The short version: domestic electrode production is feasible but requires significant experimentation to develop flux formulations from NZ-available materials that produce acceptable welds. The NZ-produced electrodes will not match the quality of commercial imports — expect more spatter, less stable arcs, and narrower parameter windows. For general structural and repair work, this is acceptable. For critical applications (pressure vessels, load-bearing structures), quality control becomes a serious concern.

Timeline: Experimental production could begin within 6–12 months if prioritized. Consistent production of acceptable-quality electrodes probably requires 1–2 years of development.

MIG wire: Easier than electrodes — it is plain steel wire with a thin copper coating (for conductivity and corrosion resistance). NZ Steel wire rod, drawn to the correct diameter, with or without copper coating, can serve. The shielding gas (CO₂ or argon/CO₂ mix) is the constraint — CO₂ is available from various NZ sources (fermentation, limestone calcination, geothermal), and argon from BOC’s air separation plants.

Industrial gases: BOC operates cryogenic air separation units in NZ that produce oxygen, nitrogen, and argon from ambient air, requiring only electricity.³⁶ These plants should continue operating under baseline grid assumptions. Acetylene is the more complex case — it can be produced from calcium carbide (CaC₂), which requires an electric arc furnace to react lime with carbon. NZ has lime (limestone) and carbon (charcoal from plantation forests). Calcium carbide production is within NZ’s industrial capability, given access to an electric arc furnace of appropriate size.³⁷

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5. ADHESIVES, SEALANTS, AND PAINTS

5.1 Adhesives

Modern industry uses a vast range of adhesive types — epoxies, cyanoacrylates, polyurethanes, PVA, contact cements, hot melts, construction adhesives, thread-locking compounds. NZ imports virtually all of these as finished products or manufactures them from imported raw materials.

In-country stocks: Not quantifiable from public sources. Distributor and retail stocks represent months of normal consumption, and consumption drops post-event. Shelf life varies widely — unopened epoxy can last 1–3 years; cyanoacrylate has a shorter shelf life (6–12 months once exposed to moisture); PVA and construction adhesives last years sealed.³⁸

Substitution pathways (Doc #47):

• Hide glue: Made from animal collagen — NZ’s meat processing industry produces ample feedstock. Hide glue has been the primary adhesive for woodworking for centuries. It is strong, reversible (useful for furniture repair), and well-understood. It is not waterproof and loses strength above approximately 60°C.³⁹
• Casein glue: Made from milk protein (casein) combined with lime. NZ’s dairy industry provides abundant feedstock. Casein glue is water-resistant (not waterproof), strong, and was historically used for plywood and aircraft construction. de Havilland Mosquito aircraft in WWII were assembled with casein adhesive.⁴⁰
• Pine pitch / rosin: Distilled from pine resin. NZ’s extensive radiata pine plantations are a large feedstock source. Pine pitch is a general-purpose sealant and adhesive, used traditionally for waterproofing and bonding. Not a structural adhesive.
• Beeswax blends: NZ has a beekeeping industry (Doc #83). Beeswax combined with rosin or tallow produces sealants and gap-fillers.
• Sodium silicate (water glass): Producible from silica sand and sodium carbonate (soda ash — from the Solvay process or from kelp ash). The Solvay process itself requires salt, limestone, and ammonia (which requires the Kapuni plant or an alternative ammonia source), creating a dependency chain that must be planned for; kelp ash is a simpler but lower-volume alternative. Used as a general-purpose adhesive and sealant, particularly for bonding glass, ceramics, and as a binder in foundry work (Doc #93).⁴¹

Honest assessment: NZ-produced adhesives cover woodworking, basic construction, and general-purpose bonding adequately. They do not substitute for structural epoxy, thread-locking compounds, anaerobic sealants, or high-performance industrial adhesives. Some modern adhesive applications have no pre-industrial equivalent — threadlocking on fasteners, for example, reverts to mechanical locking methods (lock washers, castle nuts, safety wire). The performance gap is real but manageable for most recovery applications.

5.2 Sealants

Modern sealants — silicone, polyurethane, polysulfide, butyl rubber — have no direct NZ-producible equivalents. These products seal building joints, plumbing connections, roofing, and industrial equipment.

In-country stocks: Hardware and industrial distributors hold substantial stocks. Silicone sealant in sealed tubes has excellent shelf life — manufacturers typically claim 12 months, but sealed cartridges in cool storage last several years.⁴² Polyurethane and butyl sealants are similarly long-lived in sealed containers.

Substitutes:

• Pine pitch/tar: Effective sealant for wood and some metal applications. Traditional use in boat-building and construction.
• Tallow-based compounds: Combined with beeswax and/or rosin for gap-filling and waterproofing.
• Oakum (tarred fiber): Traditional pipe and boat joint sealant. Harakeke fiber tarred with pine pitch could serve this role.
• Lead wool/paste: For plumbing joints. Lead is available from recycled batteries and other sources (Doc #35). Traditional plumbing technique, effective but toxic — appropriate for waste pipes, not potable water systems.
• Lime putty/mortar: For building joints. Standard traditional construction practice.

5.3 Paints and protective coatings

NZ has domestic paint manufacturing — Resene and Dulux both operate NZ plants — but the raw materials are largely imported: titanium dioxide pigment (the dominant white pigment), synthetic binders (acrylic, alkyd), solvents, biocides, and specialty additives.⁴³

In-country stocks: The paint supply chain holds significant stock — distributor warehouses, retail outlets (Resene ColorShops, Dulux Trade, Bunnings, Mitre 10), and the manufacturing plants themselves. Sealed paint cans have shelf lives of 5–10+ years for solvent-based products and 2–5 years for water-based (latex) products, though actual longevity often exceeds these figures.⁴⁴

Depletion under recovery conditions: Decorative painting stops almost entirely. The consumption that continues is protective coatings — preventing corrosion on steel structures, equipment, and vehicles, and maintaining weather protection on buildings. This is a fraction of pre-event consumption.

Estimate: In-country paint stocks under rationed use (protective coatings only) could last 5–15 years. This is a rough estimate based on the assumption that protective coating consumption is perhaps 10–20% of total pre-event paint consumption.

Substitution pathways:

• Linseed oil-based paints: Linseed (flax, Linum usitatissimum) can be grown in NZ — Canterbury already grows small areas of linseed for niche markets.⁴⁵ Linseed oil is the traditional binder for oil paint and is genuinely effective as a protective coating. NZ would need to expand linseed cultivation significantly.
• Tung oil: Not currently grown in NZ but potentially cultivable in northern NZ. An excellent drying oil historically used in marine paints and wood finishes.
• Milk paint (casein-based): Lime + casein + pigment. Effective for interior use; poor exterior durability.
• Whitewash: Lime-based. Traditional protective coating for buildings. Effective, cheap, NZ-producible. Not suitable for metal.
• Iron oxide pigments: NZ’s ironsand deposits provide a source of iron oxide for red/brown pigments. These are among the most durable and UV-resistant pigments available — the same chemistry as traditional red barn paint and red lead primer.⁴⁶
• Charcoal (lampblack): NZ-producible black pigment.
• Anti-corrosion coatings for steel: This is the critical application. Linseed oil paint with iron oxide pigment and zinc dust (if zinc is available — NZ does not mine zinc, but recycled zinc from galvanized steel is a source) provides genuine corrosion protection, though inferior to modern epoxy and polyurethane systems. The performance gap means more frequent recoating — every 3–5 years instead of 10–15 years for modern marine-grade coatings.

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6. ABRASIVES

6.1 Current supply

NZ imports all manufactured abrasives — grinding wheels, cutting discs, sandpaper, abrasive belts, honing stones, and loose abrasive materials. The major categories:

• Bonded abrasives (grinding wheels, cutting discs): Aluminum oxide or silicon carbide grains bonded with resin or vitrified ceramic. Used in every workshop, fabrication shop, and factory.
• Coated abrasives (sandpaper, belts): Abrasive grains bonded to paper or cloth backing. Essential for finishing, preparation, and sharpening.
• Loose abrasives: Sandblasting media, lapping compound, polishing compound.

In-country stocks: Workshop and distributor stocks. Grinding wheels and cutting discs are consumed in use and cannot be reconditioned. Shelf life is excellent — sealed bonded abrasives last years without degradation.

6.2 Depletion and substitution (Doc #39)

Depletion rate: Under recovery conditions, abrasive consumption shifts from production (which drops) to maintenance and repair (which increases). Net consumption probably drops 30–50% from pre-event levels. In-country stocks could last 2–5 years under rationed use.

NZ-produced alternatives:

• Garnet: NZ has garnet-bearing geological formations. Garnet is an effective abrasive for sandblasting and can be used in bonded form. Extraction and grading from NZ deposits requires assessment — the deposits exist but have not been developed for commercial abrasive production.⁴⁷
• Emery (natural corundum + magnetite): Not known to occur in useful deposits in NZ.
• Silicon carbide: Producible in an electric arc furnace from silica sand and carbon (petroleum coke or charcoal). NZ has silica sand (Parengarenga in Northland is a high-purity deposit) and charcoal from plantation forests. Electric arc furnace capacity is available at NZ Steel (Glenbrook) or could be purpose-built. Silicon carbide production from NZ materials is feasible but has not been attempted domestically.⁴⁸
• Natural sandstone and whetstone: For sharpening edged tools. NZ has sandstone deposits of varying grit. Identifying and quarrying suitable sharpening stones is a low-technology, low-capital activity that could begin early.
• Repurposed steel slag: NZ Steel produces slag as a byproduct. Crushed and graded slag can serve as an abrasive for rough grinding and surface preparation.

Honest assessment: NZ can produce adequate rough abrasives (garnet, slag, silicon carbide, natural stones) for general workshop use. Precision grinding — the kind needed for bearing surfaces, tool grinding, and fine finishing — requires high-quality manufactured abrasives that NZ-produced alternatives may not match. This is a genuine capability gap. Machine shops (Doc #91) should prioritize extending the life of existing precision grinding wheels through careful use, dressing, and reserving them for applications where natural abrasives are truly inadequate.

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7. LUBRICANTS

Lubricant management is covered in detail by Doc #34 (Lubricant Production from NZ Materials). This section provides the inventory and allocation framework that complements Doc #34’s production guidance.

7.1 Inventory and allocation

NZ’s total in-country lubricant stock is estimated at 15,000–30,000 tonnes of finished products (Doc #34, Section 1.2). Under rationed use, this could last 1–3 years.

Allocation priorities (in order):

1. Hydroelectric plant bearings and turbine lubrication (Doc #65) — The grid is the foundation of everything. Hydro turbine bearing failure would be catastrophic and irreversible without imported replacement bearings.
2. Essential vehicle fleet — Engine oil, transmission fluid, and gear oil for vehicles that remain operational under fuel rationing.
3. Dairy plant equipment — Milking machines, refrigeration compressors, processing equipment bearings.
4. Machine shop equipment — Lathes, mills, grinders. Cutting fluid and way oil.
5. Farm machinery — Tractors, implements, milking equipment.
6. General industrial equipment — Pumps, motors, conveyor systems.

Conservation measures:

• Extended oil change intervals based on oil analysis rather than time/distance schedules. Oil analysis capability (viscosity, contamination, wear metals) should be maintained as a national service.
• Oil reclamation and re-refining. Basic oil cleaning (settling, filtering, centrifuging) can extend the useful life of lubricants. Full re-refining (acid-clay treatment or distillation) is more complex but feasible with NZ-available equipment and chemicals.⁴⁹
• Systematic draining and storage of oil from mothballed vehicles and equipment.

7.2 Transition to bio-lubricants

Doc #34 describes the production of tallow-based, lanolin-based, and plant oil-based lubricants from NZ materials. The transition should be staged:

1. Immediate (Phase 1): Inventory and ration petroleum lubricants. Begin testing bio-lubricant substitutes in non-critical applications.
2. Months 3–12: Deploy bio-lubricants in applications where performance is adequate (low-speed bearings, chains, open gears, hand tools, wood lubrication).
3. Year 1–3: Expand bio-lubricant use as petroleum stocks deplete, reserving petroleum products for applications where bio-lubricants are inadequate (high-speed bearings, precision machinery, hydraulic systems).
4. Year 3+: Petroleum lubricants essentially exhausted for most applications. Bio-lubricants serve all achievable applications. Some high-performance applications may require trade-sourced petroleum products or acceptance of higher maintenance frequency and shorter equipment life.

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8. INDUSTRIAL GASES

8.1 Current NZ production

BOC (a subsidiary of Linde Group) operates cryogenic air separation units (ASUs) at several NZ locations that produce oxygen, nitrogen, and argon by liquefying and distilling ambient air.⁵⁰ These plants require only electricity and cooling water — both available under baseline assumptions. NZ’s ASU capacity is not publicly disclosed in detail, but serves the country’s industrial, medical, and food processing sectors.

Key gases and their recovery applications:

Gas	Source	Recovery importance
Oxygen	Air separation (domestic)	Oxy-cutting, oxy-welding, medical, steelmaking (Glenbrook BOF)
Nitrogen	Air separation (domestic)	Food preservation (modified atmosphere), metal heat treatment, inerting
Argon	Air separation (domestic)	TIG/MIG welding shielding gas, specialty metallurgy
Acetylene	Calcium carbide + water	Oxy-cutting, heating, some welding
Carbon dioxide	Fermentation, lime calcination, geothermal	MIG welding shielding gas, food preservation, fire suppression
Hydrogen	Electrolysis of water	Possible metallurgical use, ammonia synthesis (long-term, Doc #114)

Assessment: NZ’s industrial gas supply is one of the more robust categories because the primary production process (air separation) requires only electricity. As long as the grid operates and ASU plants are maintained, oxygen, nitrogen, and argon supply continues. The constraint is plant maintenance — ASUs contain specialized heat exchangers, compressors, and distillation equipment that require periodic overhaul. Spare parts are currently imported. ASU operational life without imported parts is uncertain but probably measured in years to a decade or more, depending on maintenance quality.

8.2 Acetylene production

Acetylene deserves separate attention because it is essential for oxy-acetylene cutting — the primary method for cutting thick steel plate and structural sections in workshops lacking plasma cutters. Current NZ acetylene supply is through BOC, which either produces it domestically from calcium carbide or imports it.⁵¹

Domestic production pathway: Calcium carbide (CaC₂) is produced by reacting lime (CaO) with carbon (coke or charcoal) in an electric arc furnace at approximately 2,000°C. NZ has:

• Lime: from NZ limestone (abundant)
• Carbon: from NZ charcoal (plantation forests) or coal
• Electric arc furnace capacity: at NZ Steel Glenbrook, or purpose-built

Calcium carbide reacts with water to produce acetylene gas. The process is well-established and was standard industrial practice before bulk gas distribution networks existed. Small-scale acetylene generation from calcium carbide is within NZ’s capability, though the arc furnace step requires significant electrical energy.

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9. INVENTORY AND REQUISITION PROCESS

9.1 Priority sequencing

Following the framework in Doc #1, agricultural and industrial consumable requisition occurs in the second or third wave of government action — after fuel and food distribution are secured.

Recommended timeline:

Action	Timeline	Rationale
Fertilizer stocks secured, Kapuni plant designated strategic asset	Week 1–2	Application window sensitivity; highest agricultural value
Contact major distributors (Farmlands, PGG Wrightson, NZ Safety Blackwoods, BOC)	Week 2–3	Establish cooperation, begin inventory using their systems
Formal requisition of wholesale stocks	Week 3–4	Legal process under CDEM Act (Doc #1, Section 2)
Complete inventory of major distributor warehouses	Month 1–2	Using distributor’s own inventory systems and staff
Regional depot inventory	Month 2–3	Smaller stocks, more locations
On-farm and workshop stock registration	Month 3–6	Voluntary registration with incentives; lower priority
Allocation framework published	Month 1–2	Decision criteria for each consumable category

9.2 Inventory methodology

The inventory should use existing commercial systems where possible — every major distributor already tracks stock by product, quantity, and location. The government’s role is to aggregate this data, not to recreate it.

Minimum data per item:

• Product type and specification
• Quantity (units and weight)
• Location
• Storage conditions (temperature, moisture exposure)
• Shelf life / degradation status
• Current owner

The national asset census (Doc #8) should integrate consumable inventory data so that planning can match supply (what consumables exist and where) with demand (what activities require them and where).

9.3 Storage and preservation

Most agricultural and industrial consumables store well under basic conditions:

Category	Storage requirements	Key degradation risk
Fertilizer (urea)	Dry, covered	Moisture absorption (caking). Urea is hygroscopic.
Fertilizer (superphosphate)	Dry, covered	Moisture causes caking; otherwise very stable
Herbicides/pesticides (sealed)	Cool, dark, dry	Some active ingredients degrade in heat/light; 2–5 year shelf life typical
Welding electrodes (sealed)	Dry	Low-hydrogen electrodes (E7018) absorb moisture — must be stored dry or rebaked before use
Lubricants (sealed)	Cool, dry	Oxidation; most lubricants last years sealed
Paints (sealed)	Above freezing, below 35°C	Water-based paints freeze-damaged; solvent-based very stable
Adhesives (sealed)	Varies by type	Epoxy resin and hardener: 1–3 years. PVA: years. Cyanoacrylate: 6–12 months.
Abrasives (dry)	Dry	Resin-bonded wheels can degrade in sustained moisture
Industrial gases (cylinders)	Upright, secure, ventilated	Essentially indefinite if cylinder integrity maintained

Critical note on welding electrode storage: Low-hydrogen electrodes (E7018 and similar) are highly moisture-sensitive. If they absorb moisture, the welds they produce are prone to hydrogen cracking — a potentially catastrophic defect in structural applications. Existing stocks of low-hydrogen electrodes should be stored in heated rod ovens or sealed containers with desiccant. This is a known requirement in welding practice, but under requisition conditions where stocks may be moved between facilities, the risk of improper storage increases.⁵²

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10. ALLOCATION FRAMEWORK

10.1 Guiding principles

Allocation of finite consumable stocks must balance:

1. Food production first. Fertilizer, agricultural chemicals, and veterinary products support the food supply, which is the foundation of everything else.
2. Infrastructure maintenance second. Lubricants, welding consumables, and industrial supplies keep the grid, water systems, transport, and industrial plant operational.
3. Highest return per unit consumed. A kilogram of urea applied to high-producing Waikato dairy land produces more food calories than the same kilogram applied to South Island hill country. A liter of hydraulic fluid keeping a hydro turbine operational is worth more than the same liter in a non-essential vehicle.
4. Preserve substitution-proof applications for last. Where a bio-lubricant can substitute for petroleum lubricant, use the bio-lubricant and save the petroleum product for applications where substitution is not possible. Where a natural abrasive can substitute for a manufactured grinding wheel, use the natural abrasive.
5. Accept declining performance. As stocks deplete and substitutes replace imports, performance declines. This must be accepted and planned for, not denied.

10.2 Category-specific allocation

Fertilizer: See Section 2.3 above. Allocation by soil test data and food production priority.

Agricultural chemicals: Prioritize animal health products (direct food production impact) over herbicides (labor can partially substitute) over pesticides (pastoral sector uses little). Arable cropping chemicals reserved for food crop production only — no ornamental or non-food horticultural use.

Welding consumables: Allocated to workshops by assessed need, with priority to essential infrastructure maintenance (power, water, transport) and food production equipment repair. Workshop-level consumable allocation managed through the regional coordinator structure (Doc #1, Section 4).

Lubricants: See Section 7 above and Doc #34.

Paints and coatings: Reserved for protective applications — corrosion prevention on steel infrastructure, weather protection on essential buildings. No decorative use while stocks are rationed.

Abrasives: Allocated to workshops alongside welding consumables. Precision abrasives (fine grinding wheels, precision stones) reserved for machine shops doing critical tolerance work (Doc #91).

Industrial gases: BOC continues operations under government direction. Oxygen and acetylene allocated to essential cutting and welding work. Medical oxygen prioritized from the same supply.

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11. LONG-TERM SUBSTITUTION TIMELINE

The following table summarizes when domestic substitutes become available for each major consumable category. These timelines assume competent execution and may slip if resources are diverted or development efforts fail.

Category	Existing stock duration (est.)	Domestic substitute available	Key constraint
Urea fertilizer	Ongoing (Kapuni plant)	Already producing domestically	Natural gas supply, catalyst life
Phosphate fertilizer	1–3 years (rock phosphate stock)	Phase 3+ (Chatham Rise, bone meal, guano)	Marine mining capability
Potassium fertilizer	1–3 years	No domestic source identified	Trade with Australia (potash)
Herbicides	2–5 years	No chemical substitute; mechanical/manual methods	Labor availability
Animal drenches	2–5 years	Partial: grazing management, breeding	Persistent low-level losses
Welding electrodes	1–3 years	Phase 2: domestic production from NZ materials (Doc #94)	Flux formulation development
MIG wire	1–3 years	Phase 2: NZ Steel wire rod drawn to diameter	Shielding gas availability
Industrial gases (O₂, N₂, Ar)	Ongoing (ASU plants)	Already producing domestically	ASU plant maintenance
Acetylene	Depends on BOC stock	Phase 2–3: calcium carbide production	Electric arc furnace capacity
Lubricants	1–3 years	Phase 1–2: tallow/lanolin bio-lubricants (Doc #34)	Performance gap in demanding applications
Paints (protective)	5–15 years	Phase 2–3: linseed oil + iron oxide pigments	Linseed cultivation expansion
Adhesives	2–5 years	Phase 1–2: hide glue, casein, pine pitch	No structural epoxy substitute
Sealants	3–10 years	Phase 2: pine pitch, tallow compounds, oakum	No silicone substitute
Abrasives	2–5 years	Phase 2–3: garnet, silicon carbide, natural stone	Precision grades difficult

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12. CROSS-REFERENCES

This document interacts with numerous other Recovery Library entries:

• Doc #1 (National Emergency Stockpile Strategy): Legal and strategic framework for all requisition activity
• Doc #8 (National Asset and Skills Census): Source of inventory data
• Doc #34 (Lubricant Production): Detailed lubricant substitution pathways
• Doc #39 (Abrasives and Cutting Tool Maintenance): Abrasive substitution detail
• Doc #47 (Adhesives and Sealants): Substitution pathways for bonding and sealing
• Doc #74 (Pastoral Farming Under Nuclear Winter): Agricultural demand context
• Doc #76 (Emergency Crop Expansion): Fertilizer demand for arable cropping
• Doc #80 (Soil Fertility Without Imports): Long-term fertility management
• Doc #84 (Pest and Weed Management): Non-chemical pest and weed control
• Doc #85 (Animal Breeding and Genetic Diversity): Breeding for parasite resistance
• Doc #89 (NZ Steel Glenbrook): Wire rod for welding consumable production
• Doc #91 (Machine Shop Operations): Consumable demand from workshops
• Doc #94 (Welding Consumable Fabrication): Domestic electrode production
• Doc #113 (Sulfuric Acid): Prerequisite for superphosphate production
• Doc #150 (Treaty of Waitangi and Māori Governance): Governance protocols for iwi engagement in regional consumables allocation
• Doc #160 (Heritage Skills Preservation): Traditional knowledge integration framework; māra kai techniques referenced in Section 2.1 (see also Docs #076, #078, #080 for domain-specific food production knowledge)

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APPENDIX A: CRITICAL UNCERTAINTIES

Factor	Uncertainty	Impact if wrong
Total in-country fertilizer stock	Not precisely known; depends on time of year	Allocation plan may over- or under-ration
Kapuni plant catalyst remaining life	Manufacturer data needed	If shorter than expected, urea production interruption
Chatham Rise phosphate accessibility	No operational mining exists	Phosphate gap may persist longer than estimated
Agricultural chemical shelf life	Published data is conservative; actual may be longer or shorter	Stock duration estimates may be wrong
Welding consumable total stock	Not publicly quantified	Workshop supply plans affected
BOC ASU plant maintenance requirements	Detailed assessment needed from BOC engineers	Gas supply interruption risk
Linseed oil yield under nuclear winter conditions	Unknown — NZ linseed growing experience is limited even under normal conditions	Paint substitution timeline may slip
Soil phosphate reserve duration	Varies by soil type and management history	Production decline may be faster or slower than estimated

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APPENDIX B: IMMEDIATE ACTION CHECKLIST (FIRST 30 DAYS)

This checklist is ordered by priority within the consumables category. It does not compete with the higher-priority fuel and food actions described in Doc #1.

• Day 1–7: Designate Ballance Kapuni urea plant as national strategic asset. Secure workforce, guarantee gas supply.
• Day 7–14: Contact Ballance and Ravensdown — secure fertilizer distribution stocks; begin inventory.
• Day 7–14: Contact BOC — confirm ASU plant operational status; secure gas supply for essential welding and medical use.
• Day 14–21: Contact Farmlands, PGG Wrightson — begin agricultural consumable inventory at warehouse level.
• Day 14–21: Contact NZ Safety Blackwoods, Wurth, industrial distributors — begin industrial consumable inventory.
• Day 14–30: Publish fertilizer allocation criteria (Section 2.3).
• Day 14–30: Issue animal health product rationing guidance to veterinary clinics.
• Day 30: Publish comprehensive allocation framework for all consumable categories.
• Month 1–2: Complete warehouse-level inventory for all major distributors.
• Month 1–3: Begin experimental bio-lubricant testing program (Doc #34).
• Month 3–6: Begin experimental welding electrode production program (Doc #94).

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1. NZ dairy production estimate: Dairy NZ reported total NZ milk production at approximately 21–22 billion litres per year in recent seasons, with year-to-year variation. The estimate of “approximately 20 billion litres” is used as a round number for illustrative purposes. Source: Dairy NZ, Facts and Figures, various years. https://www.dairynz.co.nz/ — The 5% reduction figure is illustrative, derived from the general relationship between fertilizer inputs and pastoral production documented in NZ agronomy research; it should not be treated as a precise forecast.↩︎

2. Farmlands Co-operative Society. https://www.farmlands.co.nz/ — NZ’s largest rural supplies cooperative with over 70,000 shareholders and nationwide branch network.↩︎

3. PGG Wrightson Ltd. https://www.pggwrightson.co.nz/ — Major rural services company listed on the NZX.↩︎

4. Ballance Agri-Nutrients. https://www.ballance.co.nz/ — Cooperative owned by NZ farmers. Operates the Kapuni ammonia-urea plant and Mt Maunganui superphosphate works.↩︎

5. Ravensdown. https://www.ravensdown.co.nz/ — Cooperative owned by NZ farmers. Operates superphosphate works at Napier, Hornby (Christchurch), and Ravensbourne (Dunedin).↩︎

6. NZ Safety Blackwoods (a Wesfarmers company). https://www.blackwoods.co.nz/ — Major industrial and safety supplies distributor in NZ.↩︎

7. BOC Ltd (Linde Group) operates cryogenic air separation plants in NZ. https://www.boc.co.nz/ — Specific plant locations and capacities are not publicly detailed. The number and capacity of NZ ASU installations should be confirmed through direct engagement under the emergency framework.↩︎

8. Ballance Agri-Nutrients reports Kapuni plant capacity at approximately 260,000 tonnes of urea per year. This figure is widely cited in NZ agricultural industry publications but should be verified directly with Ballance for current operational capacity, as plants undergo periodic maintenance and capacity adjustments.↩︎

9. NZ fertilizer consumption figures are derived from Ballance and Ravensdown annual reports and Stats NZ agricultural statistics. Total NZ fertilizer use has historically been in the range of 1.5–2 million tonnes per year, with significant year-to-year variation based on dairy commodity prices and weather. The specific breakdown by product type requires aggregation from multiple sources. Figure requires verification from fertilizer industry data.↩︎

10. The relationship between soil phosphate reserves and pasture production is well-documented in NZ agricultural research. See: Morton, J.D., Roberts, A.H.C., “Fertiliser Use on New Zealand Sheep and Beef Farms,” NZ Fertiliser Manufacturers’ Research Association. The “Olsen P” soil test values on well-fertilized NZ dairy land are typically in the range of 30–50 mg/L, well above the economic optimum of approximately 20–25 mg/L for many soil types, providing a buffer.↩︎

11. White clover biological nitrogen fixation in NZ pastoral systems is estimated at 100–250 kg N/ha/year under good conditions, though this varies widely with clover content, soil moisture, temperature, and management. Under nuclear winter conditions, clover growth — and therefore nitrogen fixation — would be reduced along with grass growth. The net effect on the grass-clover balance is uncertain. See: Ledgard, S.F., “Nitrogen cycling in low input legume-based agriculture, with emphasis on legume/grass pastures,” Plant and Soil, 2001.↩︎

12. Māra kai soil management knowledge: Documented in Te Ara — The Encyclopedia of New Zealand (teara.govt.nz) under “Māori gardening” and in ethnobotanical literature including Best, E., “Māori Agriculture,” Dominion Museum Bulletin No. 9, Wellington, 1925. Best’s documentation, while dated and filtered through early 20th-century colonial perspectives, records considerable practical detail on soil preparation, companion planting, and organic amendment practices. Contemporary documentation of living practitioners’ knowledge, gathered under Māori governance protocols (Doc #160), is the appropriate source for current applications. The published literature is a starting point, not a substitute for practitioner engagement.↩︎

13. Ballance Agri-Nutrients reports Kapuni plant capacity at approximately 260,000 tonnes of urea per year. This figure is widely cited in NZ agricultural industry publications but should be verified directly with Ballance for current operational capacity, as plants undergo periodic maintenance and capacity adjustments.↩︎

14. NZ natural gas reserves: MBIE publishes NZ’s petroleum and mineral resources data. https://www.mbie.govt.nz/building-and-energy/energy-and-n... — Remaining recoverable gas reserves are estimated in the range of 1,500–2,500 PJ as of recent assessments, though estimates change with ongoing exploration and depletion. The Kapuni field is mature but continues producing; other fields (Pohokura, Maui, Mangahewa) also contribute to NZ’s gas supply.↩︎

15. Urea production stoichiometry: urea (CO(NH₂)₂) is synthesized from ammonia (NH₃) and carbon dioxide (CO₂). Ammonia is synthesized from nitrogen (from air) and hydrogen (from natural gas via steam reforming). Approximately 0.5–0.6 tonnes of natural gas are required per tonne of urea produced, depending on plant efficiency. This is a well-established figure from chemical engineering literature.↩︎

16. Haber-Bosch ammonia synthesis catalyst (promoted iron oxide) has operational life ranging from 5 to 15+ years in continuous operation, depending on feedstock purity, operating conditions, and catalyst quality. This is standard chemical engineering knowledge; see any industrial chemistry reference on ammonia synthesis.↩︎

17. Rock phosphate inventory at NZ superphosphate plants is not publicly reported. The estimate of “weeks to a few months” is based on the general practice of holding 1–3 months’ feedstock at manufacturing plants, which is standard in fertilizer industry logistics. Actual stock levels at any given time vary and should be established through the requisition inventory.↩︎

18. Chatham Rise phosphorite: The deposit has been estimated at several hundred million tonnes of phosphorite nodules at grades of approximately 20–25% P₂O₅. Chatham Rock Phosphate Ltd held a mining permit that was declined by the Environmental Protection Authority in 2015 on environmental grounds. See: EPA Decision on Chatham Rock Phosphate application, 2015. https://www.epa.govt.nz/ — The resource assessment should be verified against the most recent geological survey data.↩︎

19. Small NZ land-based phosphate deposits are known in the Clarendon area (Otago), Milburn, and other locations, but these are typically low-grade and small-scale compared to global phosphate rock deposits. NZ Geological Survey records contain deposit data. Their potential contribution under recovery conditions requires detailed assessment.↩︎

20. Bone meal phosphorus content: approximately 20–25% P₂O₅ equivalent, with 3–4% nitrogen. This is standard agricultural chemistry. Bone meal was historically a significant fertilizer before the development of superphosphate from rock phosphate (the Rothamsted experiments in the 1840s–1860s pioneered this transition).↩︎

21. Seabird guano harvesting from NZ colonies would need to be assessed against conservation value. NZ’s seabird populations, while significant globally, produce guano at rates that are small relative to agricultural fertilizer demand. Historical guano extraction elsewhere (Peru, Nauru) involved deposits accumulated over millennia on islands with massive colonies — NZ’s situation is different.↩︎

22. Total in-country fertilizer stock estimate is uncertain. The range of 200,000–500,000 tonnes reflects the high seasonality of fertilizer supply — stocks build pre-season (autumn/spring) and deplete post-application. Actual stock at the time of the event could be at either end of this range. The requisition inventory (Doc #1) is essential for establishing the actual figure.↩︎

23. NZ agricultural herbicide use: Glyphosate is the most widely used herbicide in NZ agriculture, as in most developed agricultural economies. NZ-specific usage data is published periodically by the Environmental Protection Authority and in agricultural industry reports, though comprehensive volume data is not readily available in a single public source.↩︎

24. In-country herbicide stock estimate is rough, based on the general principle that NZ’s agricultural supply chain holds 3–6 months of normal supply across the distribution chain (manufacturer to farm), with some products having longer inventory cover. Actual stock levels vary by product and season.↩︎

25. Herbicide shelf life: Most commercial herbicide formulations carry 2-year shelf life claims from manufacturers. Actual stability is often longer — glyphosate formulations stored sealed in moderate conditions have been shown to retain effectiveness for 3–5+ years in field testing. Degradation accelerates with heat exposure and container breach. Source: General herbicide chemistry and product stewardship literature.↩︎

26. NZ pastoral farming pre-herbicide era: Widespread herbicide use in NZ pastoral agriculture dates from the late 1960s and 1970s, following the introduction of phenoxy herbicides (2,4-D, MCPA) in the post-WWII period and glyphosate from 1974. Prior to this, NZ’s pastoral sector relied on cultivation, mowing, and grazing management for weed control. See: O’Connor, M.B., “Pasture Renovation,” NZ Journal of Agriculture, various issues; Popay, I., “History of Weed Control in New Zealand,” NZ Plant Protection Society, 2009.↩︎

27. NZ’s per-hectare pesticide use is moderate by OECD standards, partly reflecting the dominance of pastoral agriculture (which uses relatively little pesticide) in NZ’s agricultural sector. Stats NZ and EPA publish some pesticide use data, though comprehensive volume statistics are not consistently available.↩︎

28. Ferric phosphate molluscicides: Ferric phosphate (iron(III) phosphate) baits cause slugs and snails to cease feeding, with death occurring over several days rather than the rapid kill of metaldehyde. Field trials in temperate climates show comparable overall control at recommended application rates, though higher rates may be needed in high-pressure situations. See: Speiser, B., Kistler, C., “Field tests with a molluscicide containing iron phosphate,” Crop Protection, 2002.↩︎

29. Yield impact of fungicide withdrawal on NZ cereals: This estimate is based on fungicide trial data from Plant & Food Research and FAR (Foundation for Arable Research). Actual yield impact depends on disease pressure, which varies with weather and other factors. In high-disease-pressure years (wet, mild conditions), the loss from untreated crops can exceed 30%; in low-pressure years, the loss may be minimal.↩︎

30. Impact of anthelmintic withdrawal on NZ livestock: Without effective parasite control, young stock (lambs, calves) are most vulnerable. Internal parasite infections (particularly Ostertagia/Teladorsagia in cattle and Haemonchus in sheep) can cause significant production losses and mortality in heavily parasitized young animals. See: Waghorn, T.S., et al., “Anthelmintic resistance in New Zealand,” NZ Veterinary Journal, various years.↩︎

31. Grazing management for parasite control is well-documented in NZ pastoral research. Key strategies include rotational grazing with adequate pasture spelling (breaks the parasite lifecycle), alternating cattle and sheep on the same pasture (most parasites are host-specific), and avoiding overgrazing (parasites concentrate in the bottom 2–3 cm of the sward). See: Brunsdon, R.V., “Principles of helminth control,” Veterinary Parasitology, 1980.↩︎

32. NZ’s sheep breeding industry has made significant progress in breeding for internal parasite resistance, particularly through the SIL (Sheep Improvement Limited) recording system. Breeding values for faecal egg count (FEC) — a proxy for parasite resistance — are available for many NZ ram breeds. See: https://www.sil.co.nz/↩︎

33. Welding electrode classification: E6013 is a general-purpose mild steel electrode with rutile flux (easy to use, moderate penetration). E7018 is a low-hydrogen electrode for structural work (stronger, better mechanical properties, but moisture-sensitive flux). These designations follow the AWS (American Welding Society) classification system, which is standard in NZ.↩︎

34. NZ welding consumable market size estimate is rough, inferred from NZ’s industrial base size relative to other markets. The actual figure requires verification from industry sources (Lincoln Electric, ESAB, Cigweld NZ sales data). The estimate is provided to indicate order of magnitude, not precise value.↩︎

35. Welding electrode flux composition: Standard welding metallurgy reference. See: Kou, S., “Welding Metallurgy,” Wiley, 2003. Flux compositions vary by electrode classification and manufacturer, but the major components (rutile, limestone, cellulose, iron powder, silicate binders) are well-documented.↩︎

36. BOC Ltd (Linde Group) operates cryogenic air separation plants in NZ. https://www.boc.co.nz/ — Specific plant locations and capacities are not publicly detailed. The number and capacity of NZ ASU installations should be confirmed through direct engagement under the emergency framework.↩︎

37. Calcium carbide production: CaO + 3C → CaC₂ + CO. Requires temperatures above approximately 2,000°C, achievable in an electric arc furnace. The process is well-established — calcium carbide production was a major electrochemical industry in the early 20th century. See any industrial chemistry reference.↩︎

38. Adhesive shelf life: Manufacturer data. Epoxy (sealed): typically 1–2 years claimed, often 2–3 years in practice. Cyanoacrylate (sealed): 6–12 months claimed. PVA: 1–2 years claimed, often much longer sealed. Construction adhesives: 1–2 years claimed. Actual longevity under good storage conditions typically exceeds claims.↩︎

39. Hide glue properties: Standard woodworking reference. Hide glue bond strength can exceed the wood itself in well-executed joints. Softening temperature is approximately 60°C, which limits its use in high-temperature applications. See: Hoadley, R.B., “Understanding Wood,” Taunton Press, 2000.↩︎

40. Casein adhesive in aircraft construction: The de Havilland Mosquito, produced during WWII, used casein adhesive (Aerolite) for structural bonding of its plywood fuselage and wing construction. This is well-documented in aviation history. The specific formulation used proprietary additives to improve water resistance, but the base technology (milk protein + alkali) is well-understood, though achieving consistent water resistance requires careful formulation and curing.↩︎

41. Sodium silicate (water glass) production: Na₂CO₃ + SiO₂ → Na₂SiO₃ + CO₂. Requires heating sodium carbonate (soda ash) with silica sand. Soda ash can be produced from the Solvay process (salt + limestone + ammonia) or from kelp/seaweed ash. The chemistry is well-established; see any industrial chemistry reference.↩︎

42. Silicone sealant shelf life: Manufacturers typically claim 12 months from manufacture in sealed cartridges. Practical experience in the construction industry suggests sealed cartridges stored in moderate conditions remain usable for several years. Once opened, silicone sealant cures on exposure to atmospheric moisture and has limited pot life.↩︎

43. NZ paint manufacturing: Resene Paints Ltd (NZ-owned) operates a manufacturing plant in Lower Hutt. Dulux (owned by Nippon Paint Holdings) has NZ manufacturing operations. Both companies import the majority of their raw materials — titanium dioxide pigment (primarily from Australia), acrylic and alkyd binders, solvents, and specialty additives. Some NZ-sourced materials are used (limestone filler, local water). Source: Company websites and NZ manufacturing industry reports.↩︎

44. Paint shelf life: Solvent-based paints (oil/alkyd) in sealed cans can last 10–15+ years. Water-based (latex/acrylic) paints in sealed cans typically last 5–10 years but are vulnerable to freeze-thaw damage and bacterial growth. These figures are from paint manufacturer guidance and practical industry experience.↩︎

45. NZ linseed production: Canterbury grows small areas of linseed (Linum usitatissimum), primarily for niche markets (linseed oil supplements, animal feed). Total NZ linseed area is small — estimated at a few hundred hectares in recent years. Significant expansion would be needed for industrial linseed oil production. Source: FAR (Foundation for Arable Research) crop information.↩︎

46. Iron oxide pigments from NZ ironsand: NZ’s black ironsand is titanomagnetite (Fe₃O₄ with Ti substitution). When oxidized (heated in air), it produces red iron oxide (Fe₂O₃), which is one of the most ancient and durable paint pigments. Iron oxide pigments are UV-stable, non-toxic, and weather-resistant. The suitability of NZ ironsand-derived iron oxide as a paint pigment would need to be verified through processing and testing — the titanium content may affect color and properties.↩︎

47. NZ garnet deposits: Garnet occurs in NZ metamorphic rocks, particularly in the Otago schist belt and Western Province. Whether these occurrences include deposits of sufficient quality and accessible quantity for industrial abrasive production has not been assessed in detail. GNS Science geological maps provide location data.↩︎

48. Silicon carbide production: SiO₂ + 3C → SiC + 2CO. Requires an electric arc furnace at approximately 1,600–2,500°C. NZ has high-purity silica sand at Parengarenga (Northland) and charcoal/coal as carbon sources. The Acheson process for silicon carbide production is well-documented and has been industrial practice since the late 19th century.↩︎

49. Oil re-refining: Basic re-refining processes include acid-clay treatment (used oil + sulfuric acid → precipitated contaminants, then clay filtration) and thin-film distillation. Both processes are well-documented in petroleum engineering literature. The acid-clay process is simpler but produces hazardous waste. NZ would need sulfuric acid availability (Doc #113) for this pathway.↩︎

50. BOC Ltd (Linde Group) operates cryogenic air separation plants in NZ. https://www.boc.co.nz/ — Specific plant locations and capacities are not publicly detailed. The number and capacity of NZ ASU installations should be confirmed through direct engagement under the emergency framework.↩︎

51. Acetylene supply in NZ: BOC is the primary supplier. The production method (carbide-generated or dissolved acetylene in cylinders) depends on the specific NZ supply arrangement, which is not publicly documented in detail. Historical practice in NZ and globally was carbide-generated acetylene; modern supply is typically dissolved acetylene in cylinders for safety.↩︎

52. Low-hydrogen electrode storage: AWS D1.1 Structural Welding Code specifies that E7018 and similar low-hydrogen electrodes must be stored in heated holding ovens at 120–150°C once removed from sealed packaging, and that electrodes exposed to atmosphere for more than specified periods must be rebaked at 370–430°C before use. This is standard structural welding practice, not a recovery-specific concern, but becomes more important when stocks are being moved and stored in non-standard conditions.↩︎