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Mechanization, employment, and output per man in bituminous-coal mining, volume 1

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Title	Mechanization, employment, and output per man in bituminous-coal mining, volume 1
Series Title	Mineral technology and output per man studies, report no. E-9
Creator	Hotchkiss, Willard Eugene, 1874-
Contributors	National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques United States. Bureau of Mines
Subject [LCSH]	Bituminous coal Coal-mining machinery Coal miners--United States Coal mines and mining--United States
Date Original	1939
Language	en
Contributing Institution	Illinois State Library
Identifier	5530449
Type	Text

Title	Front Cover
Transcript	MECHANIZATION, EMPLOYMENT, AND OUTPUT PER MAN IN BITUMINOUS-COAL MINING VOLUME I WORK PROJECTS ADMINISTRATION NATIONAL RESEARCH PROJECT and DEPARTMENT OF THE INTERIOR BUREAU OF MINES

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