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 aluminium dust, known as McIntyre Powder, as a way of preventing lung disease.

Al Jazeera's Daniel Lak reports from Sudbury in Ontario.

US & Canada, Canada, Health