"Unearth" follows two pairs of siblings who set out to understand what the mine might do to their home. It will screen during ...

The 95-minute film visits Butte; north Idaho's Silver Valley, barely outside Montana; Salt Lake City; and British Columbia to see the effects that large, open-pit copper mines have had in ...

To see the best of Butte, Montana, all Joyce OBill has to ... of town known as the Berkeley Pit, or just the pit, a former open-pit copper mine almost 1,800 feet deep. The city was once among ...

Berkeley Pit, an open-pit copper mine that has been allowed to fill ... along the bank of the Berkeley Pit's toxic waters, in Butte, Montana, Nov. 30, 2016. Credit: Walter Hinick /The Montana ...