As the weather changes in many parts of the country, MSHA is warning of freeze-thaw hazards as these cycles rapidly change ground and workplace conditions. Water freezing in cracks expands and loosens material, increasing the risk of rock falls, highwall failures and unstable roadways. Ice, mud and poor traction make travel hazardous. Unrecognized freeze-thaw hazards have contributed to serious mining…
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MSHA issues warning about highwalls
According to the Mine Safety and Health Administration (MSHA), since 2012, falling rocks and materials from hazardous highwalls have resulted in nine mining fatalities and 27 serious injuries.
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