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Keywords: theoretical relation
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Proceedings Papers

Paper presented at the ISRM International Symposium, October 23–24, 1973
Paper Number: ISRM-IS-1973-007
... Summary In mines of Upper Silesia Coal Basin the efficiency of detection of loosened rocks with manual infrared thermometer of RRT-10 type has been tried out and the system for estimation of roof rock quality with rebound hammer. Theoretical relation has been established between loosening...

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