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paperback. Condition: New. Language:Chinese.Paperback. Pub Date: 2016-11-01 Publisher: coal industry publishing house Book to express national professional standards as the basis. combined bolting and shotcrete respectively introduces the elementary. secondary and tertiary industry professional skill appraisal appraisal of the knowledge and skills requirements. content including rockbolt and work ethics and the basic knowledge. anchor construction. shotcrete construction. fault and accident treatment. etc.This book is .