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Method and Cost of Dredging Sand and Gravel by the Ohio River Sand Co., Louisville, Kentucky

Report issued by the U.S. Bureau of Mines discussing dredging methods of used by the Ohio River Sand Company. The different methods and costs used to recover gravel and sand are described. This report includes tables and illustrations.

Date: January 1931

Creator: Duffy, J. Hamilton

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Safety Cars of the United States Bureau of Mines

Report issued by the U.S. Bureau of Mines discussing the mine stations and safety cars used to reach miners in distress. As stated in the report, "the purpose, equipment, personnel, and construction of its safety cars" is presented. This report includes an illustration, and a map.

Date: March 1931

Creator: Forbes, J. J. & Ankeny, M. J.