Underground mining for gold can be a dangerous way to earn a living.
Miners use explosives to dislodge minerals from rock, risking physical injuries and lung diseases from abrasive dust in mine shafts.
Now a campaign in Canada is finding evidence of neurological and brain damage among miners who inhaled aluminum dust, known as McIntyre Powder, as a way of preventing lung disease.
Al Jazeera’s Daniel Lak reports from Sudbury in Ontario.
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