The Copper Mine Of 342 Dead Snow Geese

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1995, 342 dead snow geese are found in the Berkley Pit. The Berkley Pit was an operating open pit copper mine in Butte, Montana from 1955 to 1982. The mine was opened and run by the Anaconda Mining Co. When the mine was closed in ’82 it was 1 mile long by ½ mile wide and 1780 feet deep. Pumps were run to keep the water down while mining operations were running. When the mine was closed the pumps were shut off and the water level in the pit quickly started rising at a rate of .7 feet per month. By July of 2013 the pit’s water level was 1047 feet deep. This is a local problem in Butte, Montana. The pit is highly contaminated with heavy metals and acids. The water in the Berkeley Pit has a very high concentration of heavy metals. As the water filled the pit the water picked up leftover copper, iron, arsenic, cadmium, and zinc. Because of all of the massive amounts of metal deposits in the water the pit’s water is red and lime-green in color. The persistence of the heavy metals in the pit water and surrounding areas will be hundreds of years before the concentration thins out. The pit’s critical water level is 5410 ft. Once the water reaches this level it will begin to contaminate surrounding ground water, and potentially spread down the Clark Fork River. This pit, filled with toxic, contaminated water, is an environmental hazard. The water in the Berkeley pit is a poison, as it killed a flock of migrating snow geese, which will be discussed below. MGMB says “A long-term

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