MTPR

Karen Ogden

Yankee Doodle Tailings Impoundment. Butte, MT. Oct. 3, 2018.
Nora Saks / Montana Public Radio

Copper mining company Montana Resources is now one step away from receiving approval from state regulators to expand its permanent mine tailings storage facility in Butte.

Since 1986, Montana Resources (MR) has been sending the slurry of waste from its open pit copper and molybdenum mine in Butte up to the Yankee Doodle Tailings Impoundment, which sits uphill and northeast of the Berkeley Pit.

A map from a Montana Resources permit request showing the location of a proposed limestone mine near Drummond, Mont.
Montana Department of Environmental Quality

A proposal for a new limestone mine near Drummond is now open for public comment.

A subsidiary of the Washington Companies is seeking a permit from the state Department of Environmental Quality (DEQ) to operate a 546-acre open pit mine two-and-a-half miles west of Drummond.