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Some Innovations in Equipment For Scaling High Roofs and Mine Walls

Development of a Mobile Compressor and Utility Station

Equipment tested at the Bureau's oil-shale mine

Development of a rotary test drill

Blasting research at the Bureau of Mines oil-shale mine

Methods and costs of sinking a shaft through a fractured, water-bearing formation at Friedensville, Pa.

Published Year

• 1950-1959 (6) *

Subject

• Air-compressors. (1)
• Blasting (1)
• Coal mines and mining -- Equipment and supplies. (1)
• Drilling and boring (1)
• Mine safety. (1)
• Mineral industries (1)
• Mines and mineral resources (1)
• Mining engineering (1)
• Oil-shales (1)
• Oil-shales. (1)
• Prospecting--Pennsylvania--Lehigh County (1)
• Shaft sinking (1)
• Shaft sinking--Costs (1)
• Zinc ores--Pennsylvania--Lehigh County (1)

Author

• Wright, Fred D. (6) *
• Brown, Brinton C. (3)
• Burgh, Ernest E. (2)
• Ballinger, Homer J. (1)
• Brackel, Lewis H. (1)
• Fieg, Lothar. (1)
• Hastings, Warren. (1)
• Kane, F. J. (1)

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