Hammer and chisel, blows on concrete:
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Construction of buildings, driving piles
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Construction, concrete processing
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Waits, Bobcat Loader Starts Up
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Expects to be jammed, Excavator starts up
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Manual planing, Planer
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A circular saw
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Engine noise, Excavator
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Excavator approaching, jamming
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Bulldozer working
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Electric machine grinder
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Circular Saw Blade Closing
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Electric surface grinding machine
★★★★★