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3 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 · 15 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 · The energy-grade trade-off · The fundamental constraint on modern mini…
Amara Okonjo · 20 min read
Mining · 19 August 2026
Nine Grams a Tonne
What does it actually cost to pull an ounce of gold out of the ground? The honest answer runs through grade decline, energy and water bills, permitting delays and the closure liabilities nobody prices…
Amara Okonjo · 18 min read
