Title: Photographs of historical mining operations in Colorado and Utah from the U.S. Geological Survey Library
Description: Contains 558 scanned photographs from the U.S. Geological Survey Photographic Library that provide literal snapshot views of Colorado and Utah mining operations. Each approximately 1.16 megabytes and stored in a PCX format.
Subjects: Mines and mineral resources, History, Pictorial works, Databases
Places: Colorado, Utah