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Test operation of a pneumatic vibrating-blade planer in phosphate and coal :a progress report on planer-mining research, 1958-60

Relative pressure changes in coal pillars during extraction :a progress report

Published Year

• 1960-1969 (2) *

Subject

• Coal mines and mining (2) *
• Mining engineering (2) *
• Phosphate mines and mining (1)

Author

• Anderson, Webster S. (1)
• Curth, Ernest A. (1)

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