Add to ORKGReport issued by the U.S. Bureau of Mines discussing investigations of the research and technologic work done on coal during 1946. Mining methods, and properties of coal are presented. This report includes tables, illustrations, photographs, and maps
Report issued by the Bureau of Mines discussing the coal industry in Brazil. An emphasis is placed o...
Technical paper issued by the Bureau of Mines over studies of West Virginia coal fields. Characteris...
Referred to the Committee on mines and mining December 10, 1923. John Hays Hammond, chairman.Part of...
Report issued by the U.S. Bureau of Mines discussing the annual report over the research and technol...
Report issued by the U.S. Bureau of Mines discussing coal research and technology. Mining methods, a...
Report issued by the Bureau of Mines discussing the anthracite coal fields of Pennsylvania. History,...
"Twenty-fifth in a series, report reviews briefly work in progress during 1960 and furnishes referen...
Technical paper issued by the Bureau of Mines over studies conducted on the constituents of coal. As...
Report issued by the U.S. Bureau of Mines on the characteristics of different coal varieties after c...
Technical paper issued by the Bureau of Mines over analyses of coals from many western states. The c...
Report issued by the Bureau of Mines over studies conducted on thin coal beds of the anthracite regi...
Report issued by the U.S. Bureau of Mines discussing studies conducted on coal mining techniques use...
Report issued by the Bureau of Mines over investigations of coking-coal reserves of Grundy County, T...
Report issued by the Bureau of Mines over studies conducted on low-temperature carbonization of coal...
Report issued by the Bureau of Mines on the anthracite coal in the Bottom Red Ash Bed in Pennsylvani...
Report issued by the Bureau of Mines discussing the coal industry in Brazil. An emphasis is placed o...
Technical paper issued by the Bureau of Mines over studies of West Virginia coal fields. Characteris...
Referred to the Committee on mines and mining December 10, 1923. John Hays Hammond, chairman.Part of...
Report issued by the U.S. Bureau of Mines discussing the annual report over the research and technol...
Report issued by the U.S. Bureau of Mines discussing coal research and technology. Mining methods, a...
Report issued by the Bureau of Mines discussing the anthracite coal fields of Pennsylvania. History,...
"Twenty-fifth in a series, report reviews briefly work in progress during 1960 and furnishes referen...
Technical paper issued by the Bureau of Mines over studies conducted on the constituents of coal. As...
Report issued by the U.S. Bureau of Mines on the characteristics of different coal varieties after c...
Technical paper issued by the Bureau of Mines over analyses of coals from many western states. The c...
Report issued by the Bureau of Mines over studies conducted on thin coal beds of the anthracite regi...
Report issued by the U.S. Bureau of Mines discussing studies conducted on coal mining techniques use...
Report issued by the Bureau of Mines over investigations of coking-coal reserves of Grundy County, T...
Report issued by the Bureau of Mines over studies conducted on low-temperature carbonization of coal...
Report issued by the Bureau of Mines on the anthracite coal in the Bottom Red Ash Bed in Pennsylvani...
Report issued by the Bureau of Mines discussing the coal industry in Brazil. An emphasis is placed o...
Technical paper issued by the Bureau of Mines over studies of West Virginia coal fields. Characteris...
Referred to the Committee on mines and mining December 10, 1923. John Hays Hammond, chairman.Part of...