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Explanation and justification of tentative inspection standards for bituminous-coal mines and lignite mines.

Explanation of tentative inspection standards for anthracite mines.

Published Year

• 1940-1949 (2) *

Subject

• Coal mines and mining--Safety measures (2) *
• Mining law--United States (2)
• Mine inspection (1)
• Mine inspection--Handbooks, manuals, etc (1)

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