TORONTO - Premier Dalton McGuinty is questioning why previous Conservative governments failed to warn workers that they were exposed to Agent Orange and the dangers it posed.
He says the governing Liberals will do what they can to uncover what happened during those decades when the Tory governments were using the toxic herbicide.
McGuinty's remarks come amid new revelations that the province's use of Agent Orange was more widespread than previously thought.
Former government supervisors say the Ministry of Transportation used the toxic herbicide along northern highways to control growth up until the 1980s.
That's in addition to the spraying done by the Ministry of Natural Resources in northern Ontario to clear vast tracts of Crown land during the 1950s, 60s and 70s.
Transportation Minister Kathleen Wynne says she doesn't have any details yet but the government will investigate.
The Liberals launched a probe last week into the province's use of Agent Orange after former workers came forward saying they'd been exposed to it.
Archive documents also confirmed that forestry workers were exposed to toxic herbicides -- including Agent Orange -- while helping to clear massive plots of northern Ontario land.
