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

Use of prestressed precast shaft supports, Banner Mine, Lordsburg, N. Mex.

Methods and costs of deepening the Crescent shaft, Bunker Hill & Sullivan Mining and Concentrating Company, Kellogg, Shoshone County, Idaho

Published Year

• 1950-1959 (3) *

Subject

• Shaft sinking (3) *
• Shaft sinking--Costs (2)
• Lead mines and mining--Idaho--Shoshone County (1)
• Prospecting--Idaho--Shoshone County--Costs (1)
• Prospecting--Pennsylvania--Lehigh County (1)
• Zinc ores--Pennsylvania--Lehigh County (1)

Author

• Anderson, Ludlow G. (1)
• Hastings, Warren. (1)
• Kane, F. J. (1)
• Look, Allen D. (1)
• Olds, E. B. (1)
• Parsons, Edward W. (1)
• Wright, Fred D. (1)

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