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Geological map of the Black Hills of South Dakota & Wyoming.

Description: Map shows late nineteenth century areas and types of mineral concentration, mines, county lines, towns, railroads, mountain peaks, rivers, and tributaries in the Black Hills. Towns and railroads in Deadwood region are also indicated. Relief shown by hachures and spot heights. Scale [1:316,800].
Date: 1897
Creator: Scott, Samuel, 1846-1917
Item Type: Refine your search to only Map
Partner: University of Texas at Arlington Library

Mining Sulfur.

Description: Patent for a method of mining sulfur and other things that have similar melting points that is less expensive and more efficient than previous methods. A machine sprays hot fluid at fissures where the mineral exists, melts it, and carries it away in the stream.
Date: April 27, 1897
Creator: Higgins, Pattillo & Carroll, George W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Ore Concentrator

Description: Patent for a "machine for separating ores of precious metals, and particularly to that class of machines known as 'dry concentrators or separators,' used for separating fold ore by means of an air-blast over dry sand, gravel, quartz, etc." (lines 10-15). Illustrations and instructions are included.
Date: August 17, 1897
Creator: Waer, Luis M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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