Steelworkers call for healthier mines Canada NewsWire
Nancy Hutchison, the Steelworkers' Ontario/Atlantic Health and Safety Coordinator, said mine employers are using a substance known as 'pastefill' underground to fill the stopes after they are mined out. She said it may well be that pastefill is mostly silica and exposure to it is hazardous.
'The additional problem is that there have been recent incidents of entire pastefill walls collapsing with miners working nearby,' she said.
Other concerns raised by the union include lack of training and employers illegally extending work hours underground.