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2 results for “All-in sustaining cost (AISC)” in Mining
Mining · 5 August 2026
Grade, Cut-off and the Arithmetic of an Open Pit
…subset of resources under a stated price assumption, and they are restated every year. · All-in sustaining cost excludes the capital that built the mine, so a mine can be profitable on AISC and still never repay its investors. · How much gold is in a tonne of ore? At a typical m…
Amara Okonjo · 16 min read
Mining · 22 May 2026
The Other Supply Chain: Artisanal Mining and the Mercury Problem
…finance and a neurotoxin. Formalisation is the stated solution. Nobody agrees on what it costs. · Artisanal and small-scale mining employs millions and is the largest source of anthropogenic mercury emissions. · Mercury amalgamation persists because it is cheap, fast and require…
Amara Okonjo · 12 min read
