Description:In 1909 a range of 13 Mond gas producers were installed at Birchenwood.
Before Natural Gas was discovered, Town Gas produced from coal was used. The process consisted of heating coal in enclosed retorts, where the gases were led through pipes and treated in a variety of ways.
Coke was the main by-product of gas production, along with a huge variety of other by-products, including coal tar, benzol, pitch, creosote, nylon, solvents for paints and varnish.