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Safety education in schools of mining districts

Some information on timbering bituminous-coal mines

Published Year

• 1930-1939 (2)

Subject

• Accidents--Prevention (1)
• Mine timbering (1)

Author

• Owings, C. W. (2) *
• Crawford, Frank Stevens, (1)
• Forbes, John J. V. (1)
• Miller, Alexander Uriah, (1)

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