Ontario ministry reveals who is behind soot that blanketed parts of Hamilton CTV NewsProvince determines Birla Carbon as ‘primary source’ of mysterious soot The SpecMcMaster researchers identify cause of Hamilton’s mystery soot Global NewsResearchers looking into soot falling across Hamilton say they’ve uncovered what’s in the grime cbc.caWhen will Hamilton residents be told about this mystery grime? Ontario and Hamilton Public Health have black soot study results The Spec
