Adrodd fel Amhriodol


Testun Gwreiddiol (Anodiad: EPW014950 / 1360049)

' town gas barometers of the town gas works before the natural gas network of the 1960s most towns had a coke/tar and gas works to supply gas for lighting & cooking tar for the roads and a coke by product for heating in the home or commercial premises boilers, town gas made by cooking coal in large ovens and the production of tar from coal came to an end when north sea gas was discovered and was cheaper to supply and less pollution in the air from closer of the coke ovens. '