Helena, Bozeman, and Southwest Montana Sights

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Berkeley Open Pit Mine

Berkeley Open Pit Mine Review

Thanks to old mining waste, Butte has the dubious distinction as the location of the largest toxic-waste site in the country. Some underground copper mines were dug up in the 1950s, creating the Berkeley Open Pit Mine, which stretches 1½ by 1 mi, reaches 1,800 feet deep, and is filled with toxic water some 800 feet deep. A viewing platform allows you to look into the now-abandoned mammoth pit where more than 20 billion pounds of copper, 704 million ounces of silver, and 3 million ounces of gold were extracted from the Butte mining district.

    Contact Information

  • Address: Continental Dr. at Park St., Butte, MT 59701 | Map It
  • Phone: 406/723–3177; 800/735–6814
  • Cost: $2
  • Hours: May–Sept., Mon.–Sat. 8–8, Sun. 9–6, weather permitting
  • Location: Butte

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