Author/Creator
- Geological Survey (U.S.)✖[remove]458
- United States. Environmental Protection Agency. Office of Radiation and Indoor Air. Radon Division37
- United States. Bureau of Mines23
- United States. Bureau of Mines. Branch of Data Collection and Coordination18
- United States. Bureau of Mines. Branch of Metals10
- United States. Branch of Industrial Minerals9
- United States. Bureau of Land Management9
- United States. National Park Service7
- United States. Bureau of Indian Affairs6
- United States. Bureau of Mines. Branch of Ferrous Metals6
- United States. Department of Energy6
- United States. Environmental Protection Agency6
- National Institute of Standards and Technology (U.S.)5
- U.S. Fish and Wildlife Service5
- Southwest Florida Water Management District (Fla.)4
- U.S. Nuclear Regulatory Commission4
- United States. Army. Corps of Engineers4
- United States. Congress. Senate. Committee on Interior and Insular Affairs4
- United States. Forest Service4
- United States. Office of Surface Mining Reclamation and Enforcement4