Madzivhandila, Thingahangwi2018-10-172018-10-172017https://hdl.handle.net/10539/25820A dissertation submitted to the Faculty of Science, University of the Witwatersrand, in fulfillment of the requirements of Master of Science 2017enCrystalline Silica DustInhalationCharacterization of respirable crystalline silica dust around the abandoned mines situated in Roodepoort, West Rand, JohannesburgThesis