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 Decade: 1920-1929
 Year: 1927
 Serial/Series Title: Bulletin (United States. Bureau of Mines)
 Collection: Technical Report Archive and Image Library
The Ferric Sulphate-Sulphuric Acid Process: With a Chapter on Producing Small Bubbles of Gas in Liquids by Submerged Orifices

The Ferric Sulphate-Sulphuric Acid Process: With a Chapter on Producing Small Bubbles of Gas in Liquids by Submerged Orifices

Date: 1927
Creator: Ralston, Oliver C. & Maier, Chas. G.
Description: Report issued by the Bureau of Mines over studies conducted on the ferric sulphate-sulphuric acid process. As stated in the introduction, "the work reported here comprises merely a study of the chemistry of the process and the mechanical conditions that would have to be observed in practice" (p. 1). This report includes tables, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Mining of Thin Coal Beds in the Anthracite Region of Pennsylvania

Mining of Thin Coal Beds in the Anthracite Region of Pennsylvania

Date: 1927
Creator: Ashmead, Dever C.
Description: Report issued by the Bureau of Mines over studies conducted on thin coal beds of the anthracite region in Pennsylvania. Results of the studies are presented and discussed. This report includes tables, maps, illustrations, and photographs.
Contributing Partner: UNT Libraries Government Documents Department
Subsidence Due to Coal Mining in Illinois

Subsidence Due to Coal Mining in Illinois

Date: 1927
Creator: Herbert, Charles Arthur & Rutledge, J. J.
Description: Report issued by the Bureau of Mines over investigations on surface subsidence from coal mining in Illinois. The results of the investigations are presented and discussed. This report includes tables, illustrations, and photographs.
Contributing Partner: UNT Libraries Government Documents Department
Technology and Uses of Silica and Sand

Technology and Uses of Silica and Sand

Date: 1927
Creator: Weigel, W. M.
Description: Report issued by the Bureau of Mines over studies conducted on the production and uses of silica. Forms and different uses for silica are discussed. This report includes tables, illustrations, and photographs.
Contributing Partner: UNT Libraries Government Documents Department