London Underground service in the 1952 smog

Were fog repeaters around then?

I remember the 1952 smogs. I was 7 at the time, and had to walk along the gutter of Hendon Lane, Finchley, shining a torch behind me so my father could follow in his car. When the smog was at its worst, I could hold my arm out straight in front of me and not see my hand.

The Underground kept running, although I think with a reduced service because the trains had to go slower than usual in the open air sections. It was, of course, entirely safe. If a driver did not see a red signal in time, the trip cock would stop the train.

GOOD SERVICE

Perhaps Neasden Power Station - a coal fired power station built for the Metropolitan Railway - had something to do with the Great Smog.
A century prior to the Great Smog, Neasden had a population of just 110, was full of farms and the only sporting facilities consisted of two packs of foxhounds and the area remained largely agricultural until shortly before The Great War.

...and gas that was made by roasting coal in huge retorts,fired by coal....and don't forget that London was,then,an industrial city with thousands of factories,many producing smoke...
As a kid,growing up in Battersea I remember lighters heaped with coal going upstream to feed the factories,power stations and gasworks.
Indeed,well into the 70s,Battersea had the "Battersea Smell" -at its worst,a brown smoke-which emanated from Charrington's distillery,Garton's Glucose,Price's candles,Morgan's Crucible,Wandsworth and Fulham Gasworks,Fulham,Lot's Rd and Battersea Power stations....sometimes this settled as a sticky brown gunge on windows.....
Too young to remember the killer smogs,heavy fog,so thick one couldn't see a lit streetlamp from the other side of the road,were an occurrence well into the 70s.