Mining

The Kennecott Eagle Mine is a modern underground mining operation in Michigan’s Upper Peninsula that has attracted attention for its production of critical metals, its comparatively small surface footprint, and the complex balance it represents between natural-resource development and environmental stewardship. Operated by a subsidiary of Rio Tinto, the mine extracts sulfide-hosted ore and produces […]

The Safford Mine is a significant copper-producing operation located in the American Southwest. Nestled in southeastern Arizona, it has become an important part of the regional mining landscape and a noteworthy contributor to the national supply of copper

The Morenci area in the United States is home to one of the most important copper mining complexes in North America. This article examines the location, geology, operations, and broader significance of the mine, as well as several notable and sometimes surprising aspects of its history and technology. Readers will find a detailed picture of

The Bagdad Mine in the United States is one of North America’s long-standing copper operations. Located in central Arizona, it has shaped the local landscape, economy and community life for decades. This article explores the mine’s location and geology, its development and operations, the economic and environmental roles it plays, and several notable facts that

Which Ruby Hill Mine do you mean? There are several historic sites with that name in the United States (for example in Nevada, Colorado and other western states). Tell me the state or nearest town, or I can pick one (and I’ll note which one I choose).

The Goldstrike Mine is one of the most important and storied mineral operations in the United States. Located in northeastern Nevada, it sits within the prolific Carlin Trend, a geologic corridor that has produced a large share of American gold. This article explains where Goldstrike is, what is mined there, how the mine operates, its

The Twin Creeks mine is one of the notable gold-producing operations in the western United States. Located in the rugged landscape of northern Nevada, it stands as a modern example of how large-scale mineral extraction shapes local economies, technology application, and environmental practice. The mine produces primarily gold, with ancillary recoveries of silver and other

The Marigold Mine is one of Nevada’s notable gold-producing operations, combining large-scale open-pit mining with modern processing methods to recover gold from low-grade ores. Located in the semi-arid landscape of northwestern Nevada, the mine has played a steady role in regional employment, state revenue, and the broader U.S. gold supply chain. This article reviews where

The Penasquito mine is one of Mexico’s most important modern mineral operations, notable for its polymetallic output and regional significance. Located in the north-central state of Zacatecas, the operation produces a mix of precious and base metals that contribute to both company revenues and local economies. This article examines where Penasquito sits on the map,

El Cerrejón is a mammoth presence in northern Colombia, a landscape-defining operation that has shaped regional economies, transport infrastructure and the national export profile for decades. Situated in the arid plains of the La Guajira peninsula, the mine extracts high-volume surface coal from one of the world’s largest open-pit deposits. The scale of activity, its