A mixture of gases (chiefly hydrogen, methane, and carbon monoxide) obtained by the destructive distillation of coal and formerly used for lighting and heating.
- 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%.
- 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.
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