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  Partner: UNT Libraries Government Documents Department
 Country: France
 Decade: 1920-1929
 Collection: Technical Report Archive and Image Library
Low-Temperature Carbonization of Coal

Low-Temperature Carbonization of Coal

Date: 1926
Creator: Fieldner, Arno Carl
Description: Technical paper issued by the Bureau of Mines over studies on low-temperature carbonization of coal. Methods and equipment used during the studies are discussed. This paper includes tables, illustrations, and photographs.
Contributing Partner: UNT Libraries Government Documents Department
Ocher and Ochery Earths

Ocher and Ochery Earths

Date: May 1929
Creator: Santmyers, R. M.
Description: Report about ocher or ochery earth, "a natural mineral pigment composed largely of clay permeated with hydrated iron (ferric oxide)" (p. 2). It includes information about the uses of choer, substitutes, artificial ocher, mining and local deposits, import and export of ocher, and related information.
Contributing Partner: UNT Libraries Government Documents Department
Potash Mining in Germany and France

Potash Mining in Germany and France

Date: 1927
Creator: Rice, George S. & Davis, John A.
Description: From Scope of Bulletin: "This paper is confined largely to a discussion of methods of mining potash salts in France and Germany, in view of the possible application of similar methods when mining of the deposits in the southwestern part if the United States is undertaken, but it also includes a brief history of the German and French potash industry, a discussion of the geology of the deposits, a short description of the refining of crude salts for export, and an estimate of the cost of production."
Contributing Partner: UNT Libraries Government Documents Department