Food & agriculture
ARCANE's chain index records fertiliser supply and crush capacity as the narrowest named step. This reference record exposes the known constraint and substitution window without assuming unnamed tiers, nodes, or company exposures.
Fertiliser supply and crush capacity is the chain's named pacing step
The current reference map identifies water allocation as the constraint readers should test first. The record does not claim a supplier count or a live output level; it establishes where a disruption must be checked before a sector-level conclusion is made.
The recorded substitution window is 6–12 m. That is the decision-relevant interval: an alternative that exists outside it does not relieve the operating cycle that needs it.
Is water allocation becoming the pacing step for this chain, rather than a symptom reported downstream?
- Observe
- Start at the named step: Fertiliser supply and crush capacity. Compare a source record for that step with the downstream delivery or recognition it is meant to constrain.
- Boundary
- This is a 5 recorded tiers reference chain with a recorded substitution window of 6–12 m. It does not establish issuer exposure until a named record supports it.
- Breaks the read
- A custody-backed record showing that an alternative clears inside 6–12 m, or that downstream delivery no longer moves with water allocation, would weaken this chain read.
China bans sulphuric acid exports, halting copper production in Chile and Congo
A fertilizer-driven acid embargo in China has forced copper mines in Chile and the Congo to curtail output, raising costs and halting supply to Chinese smelters.
Read the article and evidence ledger →This is a chain record, not a supplier list. Company-level exposure is withheld until it is supported by a named record.
No family-specific series are asserted for this reference record.
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