MNO2608 Assignment 5 (COMPLETE ANSWERS) Semester 1 2025 - DUE May 2025; 100% correct solutions and explanations.

MNO2608 Assignment 5 (COMPLETE ANSWERS) Semester 1 2025 - DUE May 2025; 100% correct solutions and explanations. 1.1. Identify the key failures that led to workers being exposed to respirable silica dust and heat stress. (5) 1.2. Discuss the health risks associated with prolonged exposure to respirable crystalline silica dust and heat stress in an underground mining environment. (5) 1.3. Propose measures that should have been implemented to prevent exposure to respirable silica dust and heat stress. (5) 1.4. What role does worker involvement play in identifying and addressing occupational health risks such as silica dust exposure and heat stress? (5) QUESTION 2 [25] Case Study Two (2): Occupational Hazards in Sithandaw Construction Company, Eastern Cape. In 2023, Sithandaw Construction Company, located at 234 Osman Street, Eastern Cape, 1609, undertook the construction of a multi-story commercial building with a total workforce of 250 employees. During the project, several occupational hygiene stressors were identified on-site, including inadequate lighting, excessive noise, and poor ergonomics. These factors contributed to a workplace incident. Occupational Hygiene stressors Illumination Workers were exposed to inadequately lit areas, particularly in the stockrooms, where illumination levels measured only 60 lux using a calibrated lux meter. One electrical worker tripped and sustained an injury while lifting heavy cables in this poorly illuminated section. Noise The construction site operated with loud machinery (e.g., jackhammers and cranes), generating continuous noise levels above 85 dB(A) over a 9-hour shift, as measured with a Type 2 sound level meter. Hearing protection was