Musculoskeletal disorders in dumper operators exposed to whole body vibration at Indian mines

Dumper operators are exposed to whole body vibration (WBV) in the course of their work. The exposure to WBV in a coal mine in Central India was investigated through measurement of the magnitude of vibration and exposure time. The vibration magnitude along the dominant Z-axis ranged from 0.644 to 1.82 m/s2 in terms of root mean square acceleration. When evaluated in conjunction with their average daily exposure time of 5 h, all dumpers caused...