Boulder County, Colorado Mines

About the MRDS Mines Database:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

All 1,074 mines in Boulder County, Colorado

Western Mining History is your source for over 116,000 mines in the western states.

The Top Ten Gold Producing States

The Top Ten Gold Producing States

These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.