This report details the state of Colorado's mineral industry in 1920, providing a statistical snapshot of its operations. The Colorado Bureau of Mines presents comprehensive data on all known gold, silver, copper, and other mines active during that year. This historical document offers crucial insights into the economic landscape and industrial activities of a significant period in Colorado's mining heritage. The report serves as a primary source for understanding the mineral wealth and its exploitation in the early 20th century.

This report is presented as a valuable historical document for those interested in Colorado's mining past. Its re-publication makes available primary statistical data that has been inaccessible for decades. The facsimile nature ensures authenticity, though it may present minor imperfections. The content offers direct insight into the mineral industry's scope and activity in 1920.