Author: H. W. DavisPublisher:
ISBN:
Category : Iron mines and mining
Languages : en
Pages : 14
Book Description
Recent Trends in Man-hour Production at Iron-ore Mines PDF Download
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Author: H. W. DavisPublisher:
ISBN:
Category : Iron mines and mining
Languages : en
Pages : 14
Book Description
Author: H. W. Davis
Author: United States. Bureau of Mines
Author: United States. Bureau of Labor Statistics
Author: United States. Bureau of Mines
Author: United States. Bureau of Mines
Author: 
Author: United States. Bureau of Mines. Technical Library, Pittsburgh
Author: National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques (U.S.)
Author: 
Author: Nicholas Yaworski