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A comparison of borer, ripper, and conventional mining products in Illinois No. 6 seam coal

Published Year

• 1970-1979 (1)

Subject

• Coal--Illinois--Analysis (1)
• Coal-handling (1)
• Mining engineering--Illinois (1) *

Author

• Engelmann, William H. (1)
• Fumanti, R. R. (1)
• Schmidt, Robert L. (1)

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