Project email BLM_ID_TCM_EIS@blm.gov
For more information: Ken Gardner,
BLM Challis Field Office, 208.879.6210
The Thompson Creek molybdenum mine, owned and operated by Thompson Creek Mining Company (TCMC), is located 20 miles southwest of Challis, Idaho. It is the fourth largest primary molybdenum mine in the world and is Custer County's largest employer, typically accounting for one out of every five jobs in the county, 45 percent of its wages and salaries, and $114 million of Idaho’s total personal income. Most of the molybdenum produced from the mine is used as an alloy to make high-strength and corrosion-resistant steel. The mine began commercial production in November 1983, and the current plan of operations allows molybdenum mining to continue through approximately March 2016.
TCMC submitted a modified mining plan of operations (MMPO) to the BLM, U.S. Forest Service, and Idaho Department of Lands in December 2008 that would allow the mine to continue to produce molybdenum until approximately 2025. Under both the current mining plan of operations and the MMPO, the mine would continue to process the same amount of ore each day – approximately 30,000 tons from the bottom of the open pit. However, the mine would require additional area for waste rock and tailings storage. TCMC also began discussing a related land exchange with the BLM in May 2006, and proposed the land exchange in February 2009.