 Following the introduction of the gas mantle, cannel coal lost favour as a manufactured gas feedstock as the gas mantle could produce large quantities of light without regard for the flame luminosity of the gas burnt.On October 17, 1850, James Young, of Glasgow, Scotland, patented a method for the extraction of paraffin (kerosene) from cannel coal.It was widely used from 1850 to 1860 in the manufacture of coal oil, which today would be called shale oil.