![“We were used like guinea pigs”: In human experiment, Ontario miners say they paid a devastating price “We were used like guinea pigs”: In human experiment, Ontario miners say they paid a devastating price](https://cupe5277.ca/wp-content/uploads/2017/04/CUPE-5277-Ontario-miners-say-they-paid-a-devastating-price.jpg)
“We were used like guinea pigs”: In human experiment, Ontario miners say they paid a devastating price
It was a human experiment on an unprecedented scale. Its target: 10,000 Ontario miners. Its tool: a mysterious black powder they were forced to inhale in a sealed room before plunging underground to work.