According to the EPA, the major sources of ambient air pollution included vehicular exhaust emissions—the largest emitters being older vehicles, emissions from industrial sources, domestic waste, healthcare waste, road and windblown dust, mercury fumes from artisanal/small-scale gold mining. -
http://graphic.com.gh/news/general-news/53182-epa-warns-of-increase-in-respiratory-cases-in-africa.html
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