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The Berkeley Pit is a former open pit copper mine in the western United States, located in Butte, Montana. It is one mile (1.6 km) long by one-half mile (800 m) wide, with an approximate maximum depth of 1,780 feet (540 m).
Anaconda headframes overlooking the city of Butte. HAER photo Chalcocite replacing covellite, said to be found in 1883, in the early days of mining at Butte. Size 8.0 x 6.3 x 3.6 cm. The Anaconda Copper Mine was a large copper mine in Butte, Montana that closed operations in 1947 and was eventually consumed by the Berkeley Pit, a vast open-pit ...
The Granite Mountain/Speculator Mine disaster of June 8, 1917, occurred as a result of a fire in a copper mine, and was the most deadly event in underground hard rock mining in United States history. Most men died of suffocation underground as the fire consumed their oxygen; a total of 168 miners were killed.
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ARCO closed the Berkeley Pit and shut off the deep pumps in 1982, allowing the pit and mines to fill with water. The Continental Pit, the last active Anaconda mining property in Butte, was closed in 1982, but resumed mining in the early 2000's. Six years after ARCO acquired rights to the "Richest Hill on Earth", Butte's mines were completely idle.
Since the 1950s, five major developments in the city have occurred: the Anaconda's decision to begin open-pit mining in the mid-1950s; a series of fires in Butte's business district in the 1970s; a debate over whether to relocate the city's historic business district; a new civic leadership; and the end of copper mining in 1983.
Stalled work on a major copper mine proposed in central Montana can proceed after the state's Supreme Court ruled Monday that officials had adequately reviewed the project's environmental effects ...
Walkerville is a town in Silver Bow County, Montana, United States, that is an enclave of the consolidated city-county of Butte. The population was 639 at the 2020 census. [2] Walkerville is a suburb of Butte, and the only other incorporated community in the county, as well as the only part of the county that is not part of Butte.