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Studies of roof movement in coal mines.

Studies of roof movement in coal mines.

Underground transportation of coal :progress report [No.] 2

An analysis of the use of electricity at coal mines.

Use of salts to allay dust on shuttle-car roadways in coal mines

Control of roof and prevention of accidents from falls of rock and coal :suggested roof supports for use at faces in conjunction with mechanical loading

Suspension roof support.

Published Year

• 1940-1949 (7) *

Subject

• Coal mines and mining--Equipment and supplies (2)
• Coal-handling machinery (2)
• Mine roof control (2)
• Coal mines and mining (1)
• Coal mines and mining--Dust control--United States (1)
• Coal mines and mining--Pennsylvania (1)
• Coal mines and mining--Safety measures (1)
• Mine haulage (1)
• Mine roof bolting (1)
• Mine subsidence (1)
• Tunneling--Equipment and supplies (1)

Author

• Thomas, Edward. (7) *
• Maize, Earl R. (3)
• Greenwald, H. P. (2)
• Jones, Frank A. (2)
• Toenges, Albert L. (2)
• Barry, A. J. (1)
• Hansen, M.V. (1)
• Hartmann, Irving. (1)
• Metcalfe, Arthur. (1)
• Perz, Frank. (1)
• Seeling, C.H. (1)

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