Mineral Technology and Output Per Man Studies, Issues 11-14Works Progress Administration, National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques, 1937 - Mineral industries |
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Common terms and phrases
amount auger benches blast hole block-caving boring Bureau of Mines cars Census changes churn drill concentration copper mines core cost Cuyuna range deposits depth detachable bits diameter diamond drill drifter drifter drill drill steel driller drilling and blasting efficiency electric employed employment Engineering and Mining equipment factors gross tons hammer drill hand drilling hard rock haulage hoisting horizontal important improvements inches increased industry iron mines jackhammer Lake Superior Lake Superior District loading locomotives machine man-hour man-shift material mechanical Mesabi range metal Michigan Mining Journal mining methods Minnesota National Research Project open-cut open-pit mines operations output per worker overburden percent piston drill pits pounds power drills production prospecting quarries reduced relatively reported rock drills Rock-Drill rotary drill scrapers shaft shift short tons speed Square-set steam steam shovels stopes surface TECHNOLOGY AND OUTPUT timber trend U. S. Dept underground mines United wire saw
Popular passages
Page iv - To this end, many governmental agencies which are the collectors and repositories of pertinent information were invited to cooperate. The cooperating agencies of the United States Government include the Department of Agriculture, the Bureau of Mines of the Department of the Interior, the Bureau of Labor Statistics of the Department of Labor, the Railroad Retirement Board, the Social Security Board, the Bureau of Internal Revenue of the Department of the Treasury, the Department of Commerce, the Federal...
Page iv - Government include the Department of Agriculture, the Bureau of Mines of the Department of the Interior, the Bureau of Labor Statistics of the Department of Labor, the Railroad Retirement Board, the Social Security Board, the Bureau of Internal Revenue of the Department of the Treasury, the Department of Commerce, the Federal Trade Commission, and the Tariff Commission. The following private agencies Joined with the National Research Project in conducting special studies: the Industrial Research...
Page 162 - December 1936 to Inquire, with the cooperation of Industry, labor, and governmental and private agencies. Into the extent of recent changes In Industrial techniques and to evaluate the effects of these changes on the volume of employment and unemployment.
Page 25 - ... been cleared away from the bottom of the heading. This has been referred to in detail in the paper of DW Brunton, Notes on the Laramie Tunnel.1 An effort has been made in the foregoing statements to analyze and give reasons for a condition in rock-drill service which is now in practical operation. A hammer drill is the modern progressive miner. It has practically done away with hand drilling and in doing this it has largely increased the field of service. There is no longer any question about...
Page 162 - Finance, were appointed, respectively. Director and Associate Director of the Project. The task set for them was to assemble and organize the existing data which bear on the problem and to augment these data by field surveys and analyses. To this end, many governmental agencies which are the collectors and repositories of pertinent information were invited to cooperate. The cooperating agencies of the United States Government include the Department of Agriculture, the Bureau of Mines of the Department...
Page 150 - On the other hand, some mines are so dry that they are entirely devoid of water, and this dryness causes the workmen even greater harm, for the dust which is stirred and beaten up by digging penetrates into the windpipe and lungs, and produces difficulty in breathing, and the disease which the Greeks call cafyua.
Page ii - Industry, 1910 to 1936 {Summary! B-3 Mechanical Changes In the Woolen and Worsted Industries, 1910 to 1936 (Summary) B-6 systems of Shop Management in the Cotton-Garment Industry (out of print) Mining El Technology...
Page iv - October 1936 under the supervision of Corrington Gill. Assistant Administrator of the WPA, who appointed the directors of the individual studies or projects. The Project on Reemployment Opportunities and Recent Changes in industrial Techniques was organized in December...
Page 162 - ... analyses. To this end, many governmental agencies which are the collectors and repositories of pertinent information were invited to cooperate. The cooperating agencies of the United States Government include the Department of Agriculture, the Bureau of Mines of the Department of the Interior, the Bureau of Labor Statistics of the Department of Labor, the Railroad Retirement Board, the Social Security Board, the Bureau of Internal Revenue of the Department of the Treasury, the Department o?