In dismissing his appeal, Ontario's top court agreed with the trial judge that Vadim Kazenelson had failed to take reasonable steps to prevent what was one of the province's worst workplace accidents

A Toronto project manager found guilty in a deadly scaffolding collapse which saw members of his construction crew plummet to the ground was sentenced to three and half years in prison today.

Four died and one suffered serious injuries, while another worker - the only one properly secured to a safety lifeline - was left suspended in mid-air.