Mine Overseer's Certificate Of Competency Exam Practice Questions - Mine Overseer's Certificate Of Competency Examination (South Africa) Exam

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In a narrow-tabular platinum stope (stoping width 1.1 m), a panel face of length 30 m is blasted with an advance of 1.0 m per blast. If the ore density is 3.2 t/m³, what is the total tonnage broken per blast?

105.6 tonnes 96.0 tonnes 115.2 tonnes 132.0 tonnes

Correct Answer:

105.6 tonnes

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