Bulldozer working:
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Floor polisher
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Electric machine grinder
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Start, Build, compressor, shutdown, run
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Electric disc grinder
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Crane
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Cement loading, Construction, end of pouring
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Blows on concrete, Hammer and chisel
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Hammering a brick wall
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Jamming, Excavator approaching
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Bobcat loader approaching, jamming
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Laying,, Road construction, skating rink
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Tightening the nut, loosening, Manual ratchet
★★★★★