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Subsidence Due to Coal Mining in Illinois
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.
Date:
1927
Creator:
Herbert, Charles Arthur & Rutledge, J. J.
System:
The UNT Digital Library
Mining of Thin Coal Beds in the Anthracite Region of Pennsylvania
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.
Date:
1927
Creator:
Ashmead, Dever C.
System:
The UNT Digital Library
The Ferric Sulphate-Sulphuric Acid Process: With a Chapter on Producing Small Bubbles of Gas in Liquids by Submerged Orifices
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.
Date:
1927
Creator:
Ralston, Oliver C. & Maier, Charles G.
System:
The UNT Digital Library
Technology and Uses of Silica and Sand
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.
Date:
1927
Creator:
Weigel, W. M.
System:
The UNT Digital Library