Work of the Safety Division of the United States Bureau of Mines :fiscal year 1930

Author: Harrington, D.
Year: 1930
Document Type: MAIN
Issuing Agency: U.S. Dept. of Commerce, Bureau of Mines,
SUDOC: C 22.11:6400
Series: Information circular / United States. Bureau of Mines ;
Report Number: 6400
Subject: Mine safety--United States--Statistics
Link: https://hdl.handle.net/2027/mdp.39015095085646

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