In 1949 John Summers & Sons Steelwork at Shotton was enlarged, however the company did not believe it would have excess gas available for the Wales Gas Board. In 1953 however, the company agreed to supply enough gas to allow the North Wales Gas Grid to proceed, starting 1-1-1956. A gas holder, compressors and purification plant for the unpurified coke oven gas (using box purifiers and gastechnic purifiers), pipelines were installed across the River Dee to connect to the NWG Grid. By 1955 there were 4m cu.ft. of gas available per day.
