A mixture of gases (chiefly hydrogen, methane, and carbon monoxide) obtained by the destructive distillation of coal and formerly used for lighting and heating.
- ‘He is credited with inventing coal gas lighting, running a pipe into his front room at Redruth as early as 1792.’
- ‘Blast furnace gas contains 25% carbon monoxide, and coal gas, which was used as a fuel in Europe up until North Sea gas became plentiful, contains 16%.’
- ‘The chandelier is original, was originally lit with coal gas and today is illuminated with natural gas.’
- ‘During the last century, coal oil and coal gas were important sources of fuel for heating and lighting homes.’
- ‘They said people taking long baths in closed rooms risk coal gas poisoning from water heaters that consume large amounts of oxygen and produce carbon monoxide and carbon dioxide.’
- ‘Notwithstanding their low cost, coal stations could be improved further by new techniques such as burners fed by coal gas, generated by multi-fluidised bed gasifiers.’
- ‘Remember, you can cook food and boil water maybe in five minutes via natural gas, while it may take up to 10 to 15 minutes via coal gas.’
- ‘The tank was filled with coal gas, could run the car at normal speeds for an entire day, and a gauge wasn't needed as the driver could tell by the sagging how low he was on fuel.’
- ‘The proposed site, a former coal gas factory, is located on the the Grand River waterfront in Galt's downtown core.’
- ‘On the frigid night of December 15, 1835, as children counted down to Christmas, coal gas leaked from a stove and ignited a five-story warehouse near the south waterfront.’
We take a look at several popular, though confusing, punctuation marks.