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Cost Keeping for Small Metal Mines
Technical paper issued by the Bureau of Mines over the accounting for small metal mines. As stated in the introduction, "this report outlines methods of cost keeping suitable for metal mines of small or moderate size and presents various forms and cost sheets that have been found useful in actual practice" (p. 5). This paper includes tables, and illustrations.
Date:
February 1919
Creator:
Pickering, J. C.
System:
The UNT Digital Library
Preparation and Uses of Tar and its Simple Crude Derivatives
Technical paper issued by the Bureau of Mines over studies of coal tars. As stated in the introduction, "this paper discusses the uses to which some of the various tars are put and shows briefly the usual methods of working up tar into some of its simple or easily prepared derivatives, for which a market can generally be found" (p. 5). This paper includes tables, illustrations, and photographs.
Date:
February 1922
Creator:
Odell, W. W.
System:
The UNT Digital Library
Traps for Saving Gas at Oil Wells
Technical paper issued by the Bureau of Mines over the use of gas traps at oil wells. Different types of traps are presented and discussed. This paper includes photographs, and illustrations.
Date:
February 1919
Creator:
Hamilton, Walter Raleigh
System:
The UNT Digital Library