 Work Projects Administration, National Research Project, in co-operation with Department of the Interior, Bureau of Mines. Technology, Employment, and Output per Man in Petroleum and Natural-Gas Production.  Mineral Technology and Output Per Man Studies - Page iiiby National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques (U.S.) - 1940Full view - About this book
 | United States. Bureau of Mines - Mineral industries - 1960 - 844 pages
...Administration, Mineral Technology and Output-per-Man Studies, Report E-13. 1940. 264 pp., 53 figs. tWPA 14. Employment and Income from Gold Placering by Hand...Merrill, and RL Kiessling. Work Projects Administration, Mineral Technology and Output-per-Man Studies, Report E-14. 1940. 142 pp., 28 figs. The following reports... | |
 | United States. Bureau of Mines - Government publications - 1960 - 846 pages
...Administration, Mineral Technology and Output-per-Man Studies, Report E-13. 1940. 264 pp., 53 flgs. tWPA 14. Employment and Income from Gold Placering by Hand...Merrill, and RL Kiessling. Work Projects Administration, Mineral Technology and Output-per-Man Studies, Report E-14. 1940. 142 pp., 28 flgs. The following reports... | |
 | Mineral industries - 1941 - 652 pages
...Kiessling, 0. E. , Grade of Ore: Mineral Technology and Output Per Man Studies, Sept. E-6, Works Progress Administration, National Research Project, in cooperation...with Department of the Interior, Bureau of Mines, 1938, 11Ü pp. 8288 Weight, percent Assay,, percent Percent of total Product Mn Fe Insol. Mn Ге Insol.... | |
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