What pollution?

I really like what I do to earn a living, so stopping whilst on the way to work is an original concept for me. Anyway I must really have caught the Blip bug because this morning I did just that. Spurred on by the thought of a very busy few days with not much chance to take photographs.

The chimney in this picture never appears to throw out much apart from an innocuous looking white cloud. However things change in the hours of darkness and I've seen every colour under the sun in the wee small hours.