Surface Environment, Mine Ventilation and Underground Hazards · Underground Hazards · 1 mark · Multiple choice
During 2020 an underground coal mine recorded 5 serious, 15 reportable and 25 minor injuries. Average employment was 1200. Find the total injury rate per 1000 employees.
The total includes every listed injury category: 5+15+25 = 45. Divide by average employment and multiply by 1000: 45/1200×1000 = 37.50 injuries per 1000 employees. Thus C. Using only serious or reportable injuries would answer a different rate.
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