An Ontario court on Jan. 11 sentenced a former construction firm supervisor to a three-and-a-half-year jail term. The charge stemmed from a 2009 scaffold accident in Toronto that killed four construction workers and injured a fifth. Vadim Kazenelson, a supervisor for Metron Construction, pleaded guilty last year to four counts of criminal negligence. He previously paid a $525,600 fine in 2012. Company owner Joel Swartz previously was fined $112,500 after pleading guilty to four violations.