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MNO2608 Assignment 5 (Portfolio) Semester 1 Memo | Due May 2025. All questions fully answered.
QUESTION 1 [20] CASE STUDY ONE (1): Respirable Silica Dust Exposure and Heat Stress in an Underground Gold Mine. In 2022, twenty-five (25) mine workers at an underground gold mine in South Africa were exposed to dangerously high levels of respirable crystalline silica dust during routine drilling operations. The dust suppression systems, including water sprays and misting, were not functioning properly, and the underground ventilation system was underperforming due to delayed servicing. Exposure monitoring later revealed silica dust levels exceeding 0.25 mg/m³, which is more than double the legal limit of 0.1 mg/m³. Additionally, the underground working environment ***All questions fully answered.
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