Emphysema and airway obstruction in non-smoking South African gold miners with long exposure to silica dust Authors: Hnizdo E, Sluis-Cremer GK, Baskind E, Murray J. Source: Occup Environ Med. 1994;51:557-563 Babalwa Jekwa2019-04-05T13:10:43+02:00Dec 31st, 1994| Share This Page, Choose Your Platform! FacebookTwitterLinkedInWhatsappEmail