Description: Report issued by the U.S. Bureau of Mines discussing the annual report over the research and technology of coal during 1943. The report describes mining methods, and properties of coal. This report includes tables, illustrations, photographs, and a map.
Date: February 1944
Creator: Fieldner, Arno Carl; Beltz, J. C. & Fisher, P. L.
Item Type: Refine your search to only Report