What is this hole in the fresh asphalt? (On the wave about the secrets of the profession)


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What is this hole in the fresh asphalt? (On the wave about the secrets of the profession)
Source
What is this hole in the fresh asphalt? (On the wave about the secrets of the profession) - My, Road, Road repair, Why?, Asphalt, Asphalt laying
Asphalt Road Why? Road repair Asphalt laying
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