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2 results for “Minamata Convention” in Mining
Mining · 22 May 2026
The Other Supply Chain: Artisanal Mining and the Mercury Problem
…ring visible gold within hours. It requires almost no equipment or capital. · What is the Minamata Convention? A global treaty addressing mercury, which specifically requires signatory states with significant ASGM to produce national action plans to reduce and where feasible elim…
Amara Okonjo · 12 min read
Mining · 5 August 2026
Grade, Cut-off and the Arithmetic of an Open Pit
…de 3:1 Typical strip ratio: waste tonnes moved per tonne of ore 88–94% Recovery range for conventional carbon-in-leach circuits 1–2 yrs Time from ore in the pit to metal at the refinery, including stockpiles · Cut-off grade: where accounting becomes geology · Every tonne coming o…
Amara Okonjo · 16 min read
