Last edited by Sahn
Thursday, April 23, 2020 | History

5 edition of Operating regulations to govern coal-mining methods and the safety and welfare of miners on leased lands on the public domain under the Act of February 25, 1920 (Public no. 146). found in the catalog.

Operating regulations to govern coal-mining methods and the safety and welfare of miners on leased lands on the public domain under the Act of February 25, 1920 (Public no. 146).

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Published by Govt. print. off. in Washington .
Written in English

    Places:
  • United States.
    • Subjects:
    • Coal mines and mining -- United States.

    • Classifications
      LC ClassificationsTN805 .A38 1920
      The Physical Object
      Pagination48 p.
      Number of Pages48
      ID Numbers
      Open LibraryOL6640044M
      LC Control Number21026660
      OCLC/WorldCa6217831


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Operating regulations to govern coal-mining methods and the safety and welfare of miners on leased lands on the public domain under the Act of February 25, 1920 (Public no. 146). by United States. Bureau of Mines. Download PDF EPUB FB2