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Faulty, broken or even bent ladders have the result of a large proportion of the accidents that occur when working at elevation.
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Extendible or Leaning ladders are accountable for a huge selection of injuries and a handful of deaths every finish yr.

2016年7月21日 (木) 13:08時点における版

Extendible or Leaning ladders are accountable for a huge selection of injuries and a handful of deaths every finish yr.