English translation: pillar/block reinforcement through installation of stiffening bars/bolts
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09:03 Apr 3, 2003
Russian to English translations [PRO] Tech/Engineering / mine workings
Russian term or phrase:усиление целиков подкрепляющими штангами
Искусственное усиление устойчивости целиков путем установки подкрепляющий штанг