There is no connection between the Berkeley Pit water and well water near Butte, Montana’s East Ridge. The water levels in the Berkeley Pit and the flooding underground mines are well below the lowest groundwater levels in the greater Butte Basin. The Berkeley Pit is the “sink” or lowest water-level point in the basin, and all groundwater near the Pit […]

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A 5.6 magnitude earthquake centered near Dillon on July 25, 2005 did not affect the Berkeley Pit. There was no Pit wall sloughing or change in the water levels in the Berkeley Pit, the underground mine shafts, the alluvial aquifer wells, or the majority of the bedrock monitoring wells. However, two bedrock monitoring wells (A&B) showed changes. Well A showed […]

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