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Black Rain Mystery and Air Quality | Ottawa News
Description
Hamilton Public Health says the mysterious black rain that fell in early July likely posed minimal health risks, with exposure levels too low to cause long-term harm. While some residents reported minor symptoms like itchy eyes or sore throats, hospitals saw no surge in serious cases. Officials point to emissions from Birla Carbon on Parkdale Avenue North as the main source, though the grime’s composition suggests multiple origins. Though PM10 levels exceeded Ontario standards during the event, experts stress that ongoing air quality challenges — especially for nearby communities — demand more attention and action.
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