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3 results for “Fort Knox audit” in Mining
Mining · 5 August 2026
Grade, Cut-off and the Arithmetic of an Open Pit
…like toys, and they are moving material at a rate that would fill a football stadium in a fortnight. The second thing that fails is intuition about content. Almost none of that rock contains gold in any quantity a person could see. The ore is a fine-grained grey andesite that loo…
Amara Okonjo · 20 min read
Mining · 19 August 2026
Nine Grams a Tonne
…y multiples of the bonds originally posted, a pattern documented repeatedly by government auditors in mining jurisdictions across North America, Australia and southern Africa. · The closure gap in one sentence A gold mine's true lifetime cost includes an environmental liability t…
Amara Okonjo · 18 min read
Mining · 22 May 2026
The Other Supply Chain: Artisanal Mining and the Mercury Problem
…d' claim on a piece of jewellery or a bar most often means the material passed through an audited chain from a specific certified site or pool of sites — not that all artisanal gold everywhere meets that standard, and not that the specific atoms in your purchase can be traced to…
Amara Okonjo · 15 min read
