Road construction, jackhammer:
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Bulldozer starts, expects to be jammed
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Electric surface grinding machine
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Rough sandpaper, Sandpaper
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Vibratory grinding machine
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Manual grinder
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Close the lid, Tool box, open
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Building tape
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Excavator, engine noise
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Bobcat loader works, loads
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Electric disc grinder
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Concrete mixer
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Driving piles, Construction of buildings
★★★★★