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6 results for “Urban mining” in Industry
Industry · 28 July 2026
Urban Mining: The Richest Gold Ore on Earth Is in Your Old Phone
…t tonnage, is what makes an ore economic — and e-waste is extraordinarily concentrated by mining standards. · The bottleneck is collection and logistics, not metallurgy; the chemistry has been solved for decades. · Informal backyard recovery captures a fraction of the gold while…
Tomas Herrera · 13 min read
Industry · 7 August 2026
After the Cyanide
…ontinue for centuries, which makes it the single largest long-term liability in hard-rock mining. · Why do tailings dams fail? Most failures trace to construction method, water management or foundation conditions rather than to a single dramatic event. Upstream-raised dams, built…
Tomas Herrera · 17 min read
Industry · 7 August 2026
How Fake Gold Is Detected
Counterfeiting gold is not about making something that looks right. It is about defeating a specific test, and the industry's defences are an escalating conversation between forgers and instruments. ·…
Tomas Herrera · 15 min read
Industry · 2 July 2026
Nine Nines: Inside a Modern Gold Refinery
A doré bar arrives at 85 per cent purity and leaves at 99.99. Between those two numbers sit chlorine gas, aqua regia, an electrolytic cell and a chain of custody that is now as valuable as the metal i…
Tomas Herrera · 12 min read
Industry · 4 August 2026
The Gold Inside Your Phone
Industrial demand is the quietest third of the gold market: a few tenths of a gram per handset, multiplied by billions of devices, chosen not for prestige but because nothing else conducts as reliably…
Tomas Herrera · 15 min read
Industry · 6 August 2026
The Scrap Trade
Roughly a quarter of the world's annual gold supply has been gold before. It arrives as broken chains, single earrings and dental crowns, and it moves through a chain of intermediaries that most selle…
Ingrid Sørensen · 15 min read
