Mechanization, employment, and output per man in bituminous-coal mining

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Bibliographic Details
Corporate Authors: United States. Bureau of Mines., National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques (U.S.)
Contributors: Hotchkiss, Willard E.
Format: Book
Language:English
Published: Philadelphia, Pa. : Work Projects Administration, National Research Project in cooperation with Dept. of the Interior, Bureau of Mines, [1939]
Series:Mineral technology and output per man studies ; report no. E-9
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245 0 0 |a Mechanization, employment, and output per man in bituminous-coal mining  |c by Willard E. Hotchkiss ... [et al.] 
260 |a Philadelphia, Pa. :  |b Work Projects Administration, National Research Project in cooperation with Dept. of the Interior, Bureau of Mines,  |c [1939] 
300 |a 2 v. (xxx, 436 p.) :  |b ill., maps ;  |c 26 cm. 
440 0 |a Mineral technology and output per man studies ;  |v report no. E-9 
500 |a "August 1939." 
504 |a Includes bibliographical references. 
590 |a Library has vol. 1 only. 
590 |a The Balch Institute Library and Archives 
650 0 |a Coal-mining machinery. 
650 0 |a Coal miners  |z United States. 
650 0 |a Bituminous coal. 
700 1 |a Hotchkiss, Willard E. 
710 1 |a United States.  |b Bureau of Mines. 
710 2 |a National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques (U.S.) 
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