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The workers of south africas gold mines have the worlds highest rates of tb disease and an estimated 90 rate of latent infection.911 although research in sub-saharan africa has primarily focused on gold mining, coal min-ing has also been linked to a significant risk.
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.