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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).
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.
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.
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 ...
In the 1950s, the ACM began open-pit mining in Butte, creating a steadily growing pit, known as the Berkeley Pit, east of the main business district. In the mid-1970s, copper prices collapsed and the ACM was bought out by the Atlantic Richfield Company, . ARCO ceased mining in Butte in 1980 and shut off the deep pumps in 1982, ending what Daly ...
Rhyolite, Nevada: Before. One of Nevada's largest ghost towns, Rhyolite was once the third-largest city in the state. Formed during the Gold Rush in 1904, it grew to be a bustling town of more ...
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On April 21, 1920, during a miners strike in Butte, Montana's copper mines, company guards fired on striking miners picketing near a mine of the Anaconda Copper Mining Company, killing Tom Manning and injuring sixteen others, an event known as the Anaconda Road massacre. His death went unpunished.