The Berkeley Pit in Butte, Montana, has been a source of environmental concern for decades, as its waters—highly acidic and teeming with toxins—have seeped into the surrounding area. But today ...

One alternative is the Berkeley Pit, and although not all mine waste will be able to go in this infamous landmark due to its chemistry, the preliminary screening report determined it is the ...

The Berkeley Pit, however, has a much richer concentration of rare earths in solution and a higher volume of water and is expected to produce 40 tons a year. Dr. Ziemkiewicz believes this process ...

It will ensure that the remedy will be implemented." The plant is being built about 600 feet east of the Berkeley Pit. Swank Enterprises of Kalispell is the general contractor.

The Department of Defense has encouraged the Montana Mining Association and West Virginia University to pursue funding that could help the Berkeley Pit become a source of rare earth elements.

The Department of Defense has encouraged the Montana Mining Association and West Virginia University to pursue funding that could help the Berkeley Pit become a source of rare earth elements.