The Leadville Drainage Tunnel, Lake County, Colorado (open access)

The Leadville Drainage Tunnel, Lake County, Colorado

Report issued by the Bureau of Mines over the Leadville Drainage Tunnel. Descriptions and details about the tunnel are presented. This report includes tables, maps, illustrations, and photographs.
Date: August 1949
Creator: Elgin, Robert A.; Volin, M. E. & Townsend, James W.
System: The UNT Digital Library
Lead-Zinc-Silver in the Poughkeepsie District and Part of the Upper Uncompahgre and Mineral Point Districts, Ouray and San Juan Counties, Colorado (open access)

Lead-Zinc-Silver in the Poughkeepsie District and Part of the Upper Uncompahgre and Mineral Point Districts, Ouray and San Juan Counties, Colorado

Report issued by the Bureau of Mines over mining districts in Colorado. As noted in the introduction, "in this report the physical features, climate, and ore deposits of the districts are described, and a brief history of mining and production of lead, zinc, and silver is given" (p. 4). This report includes tables, illustrations, and maps.
Date: September 1949
Creator: Hazen, Scott W., Jr.
System: The UNT Digital Library