A performance test of the Horseshoe Bend plant was completed in November 2007, as mandated by the Record of Decision. Based on the performance review, water discharged from the plant meets all discharge standards for contaminants of concern set by the EPA. Additional adjustments still need to be made to address pH. In general, plant operations are going as expected. […]

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West Camp also part of mine flooding site

The anatomy of the thousands of miles of tunnels beneath the Butte Hill is daunting to consider and little understood by many. Important details, such as the distinction between the “West Camp” and “East Camp”, can cause consternation for many a curious observer. The Berkeley Pit and surrounding underground mine workings and bedrock wells are referred to as the “East […]

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Looking northeast from the Berkeley Pit viewing stand, visitors can see one of the most important components in the future management of the Pit: the Horseshoe Bend Water Treatment Plant. Sitting on four acres near the former McQueen neighborhood, about 600 feet east of the Berkeley Pit, the treatment plant was constructed in 2002-2003. It sits on native land that […]

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The Berkeley Pit is literally world famous in the mine waste cleanup industry, and the final technology used in the Horseshoe Bend Water Treatment Plant, a High Density Solids (HDS) process, was selected after an assessment of tests and the demonstrated effectiveness of cleanup technologies from research groups around the world. The Horseshoe Bend facility currently treats water from Horseshoe […]

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Before mining on the Butte hill and the development of the Berkeley Pit, that old creek bottom was the main channel of Silver Bow Creek, and recent studies indicate the creek corridor and surrounding land contain mine tailings. Today the drainage is referred to as the Metro Storm Drain. A French Drain collects contaminated groundwater along the channel, preventing it […]

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