Mining

Turquoise Ridge is one of the notable gold mining operations in the United States, occupying a strategic place within Nevada’s prolific mineral belt. The mine complex combines modern underground mining techniques with decades of exploration knowledge to produce gold from a classic Nevada deposit type. Its role stretches beyond simple commodity extraction: Turquoise Ridge contributes […]

The Mission Mine in the United States is a significant site in the story of American copper production. Located in southern Arizona, the mine sits within a landscape shaped by volcanic and intrusive geological events that created rich porphyry copper deposits. Its operation as an open-pit mine, the scale of its mineral resources, and its

The following article examines the geology, operations, and broader significance of the Thompson Creek mine in the United States, focusing on its role as a source of molybdenum and the economic, technical and environmental dimensions of that activity. The mine has been an important component of the North American molybdenum supply chain and serves as

The Henderson Mine is one of the most important primary sources of molybdenum in the United States. Located high in the Rocky Mountains of Colorado, the operation has for decades supplied industry with molybdenite concentrates and downstream products that are critical for modern steelmaking, high-temperature alloys, and specialty chemical applications. This article examines where Henderson

The Lucky Friday Mine occupies a prominent place in the mining history and present-day economy of northern Idaho. Located within the renowned Silver Valley of the Coeur d’Alene district, this long-lived underground operation has produced millions of ounces of silver together with significant quantities of base metals. The mine’s story reflects the region’s geology, evolving

The Midas Mine is one of the historic and still-notable mineral occurrences in the western United States. Located in the mineral-rich landscapes of the Great Basin, it has produced both gold and silver from veining and replacement-style deposits, and its story ties together geology, frontier history, modern mining techniques and local economic development. This article

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