Risk of pulmonary tubercolosis relative to silicosis and exposure to silica dust in South Africa gold miners Authors: Hnizdo E, Murray J. Source: Occup Environ Med. 1998;55:496-502. Babalwa Jekwa2019-04-02T22:52:07+02:00Dec 31st, 1998| Share This Page, Choose Your Platform! FacebookTwitterLinkedInWhatsappEmail