Certificate In Strata Control - Coal Exam Practice Questions - Certificate In Strata Control - Coal (South Africa) Exam

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A coal seam mined at depth H = 100 m uses bord width B = 6 m, pillar width w = 14 m, and mining height h = 3.5 m. Calculate the Safety Factor (SF = S / s) of the pillars.
Correct Answer:
2.07

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