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Full text of pit and quarry handbook.Useful and practical information for the sand, gravel, stone, cement, gypsum, and lime industries.See other formats.
We are a large-scale joint-stock enterprise integrating scientific research, production and sales.Our leading products have crushing equipment, sand making equipment, mobile crusher, etc., Each type of product is with complete specifications. All products have passed ISO9001, CE and GOST international quality system certification.