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The National safety competition of 1930

The National safety competition of 1931

The National safety competition of 1932

The National safety competition of 1935

The national safety competition of 1936

Allaying dust in bituminous-coal mines with water

Published Year

• 1930-1939 (6)

Subject

• Coal mines and mining--United States (6) *
• Mine safety (6) *
• Coal mine accidents (5)
• Bituminous coal (1)
• Dust control (1)
• Mine dusts (1)

Author

• Adams, William W. (5)
• Lawrence, T. D. (2)
• Getzin, E. E. (1)
• Harrington, D. (1)
• White, D. R. (1)

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