These shots were taken Monday, July 31 at 2:54 pm. Check out the
series of stories in The Hamilton Spectator on black soot plaguing Hamilton neighbourhoods (just click on the above title to go to one of the articles. To read the rest do a search on The Spec's website for "soot"). Sorry for the sarcasm, but do you think that emissions like these from Columbian Chemicals just might be related? Funny how the company had nothing "unusual" to report. Should that be comforting to us?
UPDATE Aug 9: I just learned that Columbian Chemicals did know of this emission, that it lasted for 10 mins and that they then shut down the stack for 2 days while they fixed the problem. Well done!