Bulldozer working:
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Laying,, skating rink, Road construction
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Grinder
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Excavator digs a hole
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Jackhammer, Road construction
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Construction, cement loading, end of pouring
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Planer, manual planing
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Electric surface grinding machine
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Crane
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Expects to be jammed, Excavator starts up
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Start up, drive away, Bobcat loader
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Knocking a hammer indoors with an echo
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Construction of the road, clean the old
★★★★★