Molybdenum mining giant enters pact with U.S. Energy Corp. over Lucky Jack CRESTED BUTTE, CO (kbut) - One of the largest molybdenum mining companies in the world has dipped its toe in the pool and signed on to test the waters with the proposed Lucky Jack Mine on Mt. Emmons. Thompson Creek Metals Company USA has signed an options agreement with U.S. Energy Corp. that gives Thompson Creek an option to acquire up to 75% in the project. © Copyright 2021, kbut