An estimation of the rate at which crocidolite asbestos fibres are cleared from the lung Author: Du Toit RSJ. Source: Ann Occup Hyg. 1991; 35:433-438. Babalwa Jekwa2019-04-04T10:24:07+02:00Dec 31st, 1991| Share This Page, Choose Your Platform! FacebookTwitterLinkedInWhatsappEmail