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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.
Object Type:
Report
System:
The UNT Digital Library
Process of Treating Slag and Furnace Therefor.
Patent for a process of treating slag and furnace therefore. It has an improved method for separates melted metals produced during smelting and extracting the precious metals from slag. The richer matte and base-bullion run off separately and into separate taps.
Date:
August 20, 1895
Creator:
van Cleve, Charles M. & Rhodes, Robert D.
Object Type:
Patent
System:
The Portal to Texas History
Denver & Rio Grande Western (DRGW) 605
A photograph postcard showing Denver & Rio Grande Western (DRGW) 605, 2-8-0, Leadville, CO.
Date:
August 7, 1938
Creator:
Kindig, Richard H.
Object Type:
Postcard
System:
The Gateway to Oklahoma History
Denver & Rio Grande Western (DRGW) 1530
A photograph print showing Denver & Rio Grande Western (DRGW) 1530, 4-8-2, and 1512, 4-8-2, double-heading at Tennessee Pass near Leadville, CO.
Date:
August 12, 1946
Creator:
Graves, Ralph L.
Object Type:
Photograph
System:
The Gateway to Oklahoma History