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1965 to 1979
the history of Leyton and Leytonstone
from . dot to … dots – with plenty of spaces
Air quality
The Clean Air Act made smokeless fuel compulsory, but the real improvement to air quality came from replacement of coal fires, previously almost universal, with gas-fired central heating. Diesel trains replaced steam trains, though the conversion of the line to Liverpool Street into a branch of the electric underground had already occurred in 1947 1.
1 How the Railway Came to Leytonstone by Alan Simpson