Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Google Analytics Dashboard for Photographs of historical mining operations in Colorado and Utah from the U.S. Geological Survey Library

Photographs of historical mining operations in Colorado and Utah from the U.S. Geological Survey Library

URI: https://pubs.usgs.gov/publication/ds12

Display as: