Action on silica, silicosis and tuberculosis. A project of work and health in Southern Africa (WAHSA) Authors: Rees D, Murray J, Swanepoel A, Nogueira C. Source: Afr Newslett Occup Health and Safety. 2006;16:59-61. Babalwa Jekwa2019-03-25T12:06:37+02:00May 24th, 2007| Share This Page, Choose Your Platform! FacebookTwitterLinkedInWhatsappEmail