U.S. Geological Survey National Mineral Resource Assessment—An
Estimate of Undiscovered Deposits of Gold, Silver, Copper, Lead, and
Zinc in the United States
By Klaus J. Schulz and Joseph A. Briskey 933 KB (5 pages, *.PDF)
U.S. Geological Survey Circular 1294: Proceedings for a
Workshop on Deposit Modeling,
Mineral Resource Assessment, and
Their Role in Sustainable Development (Abstract and Downloads)
Focusing on Minerals and Energy, Engineering Geology, Geologic Communications and Geologic Materials. Tons of maps, useful papers, information, and more.