Mining has occurred in the United States from pre-Revolutionary times. How much of our Nation's total mineral wealth has already been discovered? How much is left? For conventional-type deposits that contain gold, silver, copper, lead, or zinc, about as much is left to be discovered in the conterminous 48 States as has already been discovered.
|Publication Subtype||USGS Unnumbered Series|
|Title||National Mineral-Resource Assessment: The 1996 estimate of undiscovered gold, silver, copper, lead, and zinc remaining in the United States|
|Series title||Information Handout|
|Publisher||U.S. Geological Survey|
|Google Analytic Metrics||Metrics page|