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The Greens Creek operation on Alaska’s Admiralty Island is one of North America’s most notable base- and precious-metal mines. It combines a remote, rugged setting with sophisticated underground mining and processing, producing large quantities of silver alongside significant amounts of zinc and lead, with gold and copper recovered as byproducts. This article explores the mine’s […]

The Rosemont Project is a proposed large-scale copper development in southern Arizona, situated in the foothills of the Santa Rita Mountains roughly southeast of the city of Tucson. Designed as an open-pit porphyry copper operation, the project has drawn attention for its potential to supply significant quantities of copper — a metal central to modern

The Stillwater Mine, set against the rugged backdrop of south-central Montana, is a cornerstone of North American production of the rare and economically crucial platinum group metals. As one of the few large-scale producers of palladium and platinum outside of southern Africa and Russia, the mine plays a distinctive role in global supply chains, regional

The Galena Mine has long been emblematic of the United States’ rich history in metal extraction, particularly in the production of silver and lead. This article explores the mine’s setting, the minerals extracted there, its economic role through time, and several lesser-known but intriguing aspects that make the site notable. The narrative connects geology, industrial