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3 results for “karat explained” in Mining
Mining · 5 August 2026
Grade, Cut-off and the Arithmetic of an Open Pit
…s clothes. Before comparing two producers on cost per ounce, check how much of the gap is explained by byproduct credits rather than by genuine differences in grade, strip ratio or metallurgy. · Taxation, royalties and the government's share · Every tonne of ore that clears cut-o…
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
Mining · 22 May 2026
The Other Supply Chain: Artisanal Mining and the Mercury Problem
A significant share of the world's gold is produced by people working with hand tools, informal finance and a neurotoxin. Formalisation is the stated solution. Nobody agrees on what it costs. · Artisa…
Amara Okonjo · 15 min read
