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- [7] THE SELECTION OF UNDERGROUND EQUIPMENT FOR COAL-MINES JOURNAL OF THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY, 1983, 83 (03): : 61 - 67
- [8] SAFETY ASPECTS OF PERMITTED EXPLOSIVES FOR USE IN GERMAN UNDERGROUND COAL-MINES PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM ON PYROTECHNICS AND EXPLOSIVES, OCTOBER 12-15, 1987, BEIJING, CHINA, 1987, : 350 - 351
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