Pinch Point

In conflict minerals supply chains, the ‘pinch point’ is the point in the supply chain where all upstream ore flows converge before being transformed into a metal product that cannot be traced back to its original source. For 3TG minerals, the smelter or refiner is the pinch point. Once ore is smelted into metal, individual origin traceability is effectively lost. This is why conflict minerals due diligence frameworks focus audit activity at the smelter/refiner level rather than requiring each downstream manufacturer to trace minerals to the mine level.

RMI RMAP documentation; OECD Due Diligence Guidance, Third Edition (2016); Regulation (EU) 2017/821.

The pinch point concept explains why RMAP audits are conducted at smelters/refiners, not at each downstream tier. A single RMAP-conformant smelter can provide assurance to thousands of downstream companies simultaneously. For procurement and compliance teams, the practical implication is: collect CMRT data to identify all smelters in your supply chain, then verify each smelter’s RMAP status on the Standard Smelter List. This is the most efficient and auditable approach to conflict minerals due diligence.

A circuit board manufacturer uses 15 different suppliers, each with their own tin sources. All of that tin eventually passes through 8 tin smelters (the pinch point). Verifying that all 8 smelters are RMAP-conformant provides reliable evidence of responsible sourcing for the entire upstream supply chain, without the manufacturer needing to trace individual ore batches.