Wounding capacity of rotary lawn mowers

W H Park, W E DeMuth
Journal of Trauma 1975, 15 (1): 36-8
The rotary lawn mower possesses a powerful wounding mechanism. A typical 26-inch rotary mower blade rotating at 3,000 revolutions per minute develops a kinetic energy of 2,100 ft lb. Wounds may be inflicted by direct strike or by missile action due to a broken blade or other mass. Other serious injuries due to crushing or upset are commonly seen with self-propelled mowers. Ways of reducing these risks are enumerated.

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