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

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In the Salamon-Munro coal pillar strength formula S = 7.18 * (w^0.46 / h^0.66), what units must be used for pillar width (w), pillar height (h), and the resulting strength (S)?

w and h in meters (m), S in Megapascals (MPa) w and h in feet (ft), S in pounds per square inch (psi) w and h in meters (m), S in Kilopascals (kPa) w and h in millimeters (mm), S in Megapascals (MPa)

Correct Answer:

w and h in meters (m), S in Megapascals (MPa)

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