National mineral-resource assessment
An edition of National mineral-resource assessment (1997)
the 1996 estimate of undiscovered gold, silver, copper, lead, and zinc remaining in the United States
By Richard B. McCammon
Publish Date
1997
Publisher
U.S. Geological Survey
Language
eng
Pages
-
Description:
subjects: Minerals, Mines and mineral resources, Ore deposits, Ores
Places: United States