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 (41 Stat. 437) and amendments thereto.

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 (41 Stat. 437) and amendments thereto. - Second edition. - Washington, U.S. Govt. print. off., 1938. - ii, 46 p. 23 cm.

At head of title: United States Department of the interior.

gs 38000127


Coal mines and mining--United States.
Coal mines and mining--Safety measures.
Public lands--United States.
Mining law--United States.

TN23 / .U75 1938

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