Every year, around this time, the asphalt surface of the school playground would be buried under a huge pile of coke. It was like lumps of gray cindery coal, but without much weight. Gradually, it disappeared into the school boiler room.
The coke was a by-product of the corporation gasworks, which manufactured coal gas supplied to our houses through a network of pipes. We had gas cookers, and gas taps beside the fireplace to which you could connect a free-standing gas fire through a rubber tube. I ran the Bunsen burner for my home chemistry set in the same way. Outside, there were gas lamps along the street, and a man with a long pole came to turn them on and off each evening and morning. My dad could remember the pre-electric days when houses had gas mantles for internal lighting.
Gas was produced by heating coal in the absence of air, with coke, tar, and chemicals as by-products. Coke burned hotter and cleaner than coal and could be used as fuel in specialized boilers. It was also used in industrial processes, but was no good for the home fireplace.
Dad’s Arthur Mee Encyclopedia (1927) has a series of pictures and diagrams showing how coal gas was made and the amount of plant and machinery needed. Here are the first three.
The
corporation gasworks were near the docks where they were supplied by canal with coal from the Yorkshire coal fields.
In other towns, coal trains ran through the streets to the gasworks. The infrastructure was extensive: heavy engineering, railway lines, underground
pipes. You could live in Gas Works Street, work at the gasworks, drink and be entertained at the Gas Club, and go on gasworks outings. Some of the structures are still around.
That, for me, describes 1950s Britain (and earlier): asphalt playgrounds, school boiler rooms, gas lights, gas works, coal trains pulled by steam engines, and coke before it had any other meanings. I have no idea why it came to me in the middle of the night.
It became obsolete when we changed over to North Sea Gas in the early 1970s. Millions of household appliances had to be converted to burn natural rather than coal gas. The gas storage tanks at the gas works continued in use for many years, until condemned as unnecessary. Many have since been dismantled. We have hardly any gas storage in Britain now; just a few days’ supply, as compared with a few months’ supply in Germany.
I found my love by the gasworks croft
Dreamed a dream by the old canal
Kissed my girl by the factory wall
Dirty old town, dirty old town
I heard a siren from the docks
Saw a train set the night on fire
Smelled the spring on the smoky wind
Dirty old town, dirty old town
Clouds are floating across the sky
Cats are prowling upon their beat
Spring’s a girl in the streets at night
Dirty old town, dirty old town
I’m going to make a good sharp axe
Shining steel tempered in the fire
We'll chop you down like an old dead tree
Dirty old town, dirty old town
https://musescore.com/user/5060416/scores/4832062