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6 results for “mine rehabilitation cost” in Industry
Industry · 7 August 2026
After the Cyanide
Every ounce of mined gold leaves behind roughly a tonne of processed rock and the water that carried it. What happens to that material after the last shift is the part of the industry with the longest time…
Tomas Herrera · 17 min read
Industry · 28 July 2026
Urban Mining: The Richest Gold Ore on Earth Is in Your Old Phone
…y richer than gold ore? By concentration, frequently yes. Modern underground ore is often mined at grades measured in single-digit grams of gold per tonne, while sorted, high-grade circuit boards can run into the hundreds of grams per tonne. What e-waste lacks is a deposit: the m…
Tomas Herrera · 13 min read
Industry · 2 July 2026
Nine Nines: Inside a Modern Gold Refinery
…bars trade without re-assay in the wholesale market. · Provenance documentation now determines a bar's marketability as much as its fineness. · What is a doré bar? A doré bar is the semi-pure alloy poured at a mine site, typically 70–90 per cent gold with silver and base-metal i…
Tomas Herrera · 12 min read
Industry · 4 August 2026
The Gold Inside Your Phone
…ties, yes: a tonne of scrap circuit boards contains far more gold than a tonne of typical mined ore. At household scale it is not economic and the informal chemical methods used to attempt it are genuinely dangerous. · Does a higher gold price reduce electronics demand? Barely, i…
Tomas Herrera · 15 min read
Industry · 6 August 2026
The Scrap Trade
…a quarter to a third of annual gold demand, and its volume responds to price faster than mine output can. · Scrap is priced off spot, adjusted for assayed fineness, then discounted for testing, refining, transport and each intermediary's margin. · High-street payouts commonly la…
Ingrid Sørensen · 15 min read
Industry · 7 August 2026
How Fake Gold Is Detected
…The layered approach · No dealer runs one test. Authentication is a sequence, ordered by cost and speed, in which each stage is designed to catch a different class of forgery. A bar that reaches the end of the sequence has been examined by methods with independent physical bases…
Tomas Herrera · 15 min read
