BLM Colorado Mining and Minerals
The Colorado solid minerals program consists of locatable minerals, solid leasable minerals, and mineral materials. Colorado's locatable minerals program has 10,380 active mining claims, 31 authorized mining plans of operations, and 33 authorized exploration notices for gold, silver, uranium, and other uncommon minerals. Colorado's solid leasable minerals program has eight sodium leases, five potassium prospecting permits, and six oil shale research, development and deployment leases. In Fiscal Year 2015, Colorado's mineral materials program produced 346,406 cubic yards of mineral materials such as sand, gravel, and stone with a value of $370,856.