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Automated borehole surveying system for steeply inclined cased boreholes

Correlating microfilm mine maps with topographic maps

Improved drilling of coal measure rocks for underground mine void detection and exploration programs

Published Year

• 1970-1979 (2)
• 1990-1999 (1)

Subject

• Mine surveying (3) *
• Abandoned coal mines (1)
• Borings (1)
• Coal-cutting bits (1)
• Mine maps (1)
• Polyethylene oxide (1)

Author

• Pahlman, J. E. (1)
• Tesch, Willard John. (1)
• Tuzinski, Patrick A. (1)
• Uhrin, David Charles. (1)
• Watson, Pamela J. (1)

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