A worker or machine that applies asphalt to roads, driveways, or other surfaces; a person who paves with asphalt.
From 'asphalt' (the material) + '-er' (agent noun suffix). The '-er' suffix designates a person or device that performs the action of asphalting.
Asphalters are skilled tradespeople who have to time their work perfectly—asphalt has to be laid at just the right temperature or it won't bond properly, making it a mix of chemistry and craftsmanship.
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