Berkeley Pit

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). It is filled to a depth of about 900 feet (270 m) with water that is acidic, about the acidity of beer or tomatoes. As a result, the pit's water is laden with heavy metals and dissolved metals that leach from the rock in a natural process known as acid rock drainage. The pit's water content includes dissolved copper, arsenic, cadmium, zinc, and sulfuric acid.

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Wikimedia, Wikidata
quarry lake, mine, Q30, 

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Location: 46.0173, -112.5102, KML, Cluster Map, Maps,
2 places

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  Anaconda Copper Mine ⓘ
  mine

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  Berkeley Pit ⓘ
  mine

Frameless

Butte MT Berkeley Pit April 2005 Composite Fisheye View

Berkeley Pits Panoramic

Berkeley Pit Butte, Montana

Extremophiles Berkeley

Berkeley Pit2

Berkeley pit coppe galleryfull

Berkeley Pit, mine in Butte, Montana in 1986

Berkeley pit1984

Butte MT Berkley Pit close up of telephone polls for scale

Berkeley Pit, Butte, Montana (45167982)

Type	Subtype	Date	Description	Notes	Source
site	mine		Anaconda Copper Mine	copper mine, Anaconda Copper	Wikidata
site	mine		Berkeley Pit	mine, quarry lake	Wikidata
commons	image		Butte MT Berkeley Pit April 2005 Composite Fisheye View		Commons
commons	image		Berkeley Pits Panoramic		Commons
commons	image		Berkeley Pit Butte, Montana		Commons
commons	image		Extremophiles Berkeley		Commons
commons	image		Berkeley Pit2		Commons
commons	image		Berkeley pit coppe galleryfull		Commons
commons	image		Berkeley Pit, mine in Butte, Montana in 1986		Commons
commons	image		Berkeley pit1984		Commons
commons	image		Butte MT Berkley Pit close up of telephone polls for scale		Commons
commons	image		Berkeley Pit, Butte, Montana (45167982)		Commons