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2 results for “Tailings” in Mining
Mining · 5 August 2026
Grade, Cut-off and the Arithmetic of an Open Pit
…That number is the entire business. Everything else at a mine — the fleet, the mill, the tailings facility, the workforce, the community agreement, the closure bond — is machinery for turning grade into cash flow at an acceptable cost per tonne. To understand why gold mining beh…
Amara Okonjo · 16 min read
Mining · 22 May 2026
The Other Supply Chain: Artisanal Mining and the Mercury Problem
…ction, it substitutes an acute hazard for a chronic one — and where cyanide is applied to tailings already contaminated with mercury, it can mobilise that mercury into a more transportable form. · Gravity first: it is the only intervention with no toxic downside and immediate rev…
Amara Okonjo · 12 min read
