Additional examples are adjusted to the entries in an automated way - we cannot guarantee that they are correct.
Bottom ash is part of the non-combustible residue of combustion in a furnace or incinerator.
Ash content of coal is the non-combustible residue left after coal is burnt.
The fire itself was on an iron grating placed across this flue, with a shallow ashpan beneath to collect the non-combustible residue.
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