Without the pumps running, toxic groundwater began filling the mile-wide hole. Within months, what had been Montana’s pride became America’s most dangerous lake. Here’s the story, and how you can ...

Atlantic Richfield/BP and officials with the Montana Resources mine in Butte continue discussions about how the Berkeley Pit and a site off Shields Avenue could serve as repositories for Superfund ...

Montana Resources and Atlantic Richfield Co. began the long-awaited discharge of treated water from Berkeley Pit into Silver Bow Creek in Butte this week, with little fanfare. The discharge began ...

A report by The New York Times revealed that efforts to extract these precious materials from a closed mining operation called the Berkeley Pit in Butte, Montana, may help increase ... with 50 billion ...

Atlantic Richfield/BP and officials with the Montana Resources mine in Butte continue discussions about how the Berkeley Pit and a site off Shields Avenue could serve as repositories for Superfund ...

BUTTE - A federal judge has signed a brief order that determines the future of the Berkeley Pit. The order signed by U.S. District Judge Sam E. Haddon of Great Falls spells out a plan for ...

It’s called “The City that Ate Itself: Butte, Montana and Its Expanding Berkeley Pit. ... With fewer mine workers, fewer people overall, the removal of neighborhoods, ...

Montana Resources, the mining company that took over from the Anaconda Copper Co., still uses this alchemical trick in a process at its Continental Pit mine. Next to the mine is the Berkeley Pit ...

A disoriented elderly man drove onto the frozen Berkeley Pit Monday night — and survived without incident, the Butte police department confirmed Friday.

Caleb Uerling, a fisheries biologist for Montana Fish, Wildlife & Parks, believes the high conductivity of treated Berkeley Pit water discharged into Silver Bow Creek could affect trout.