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Jamming, Bobcat loader approaching
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Sawing
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Loosening, tightening the nut, Manual ratchet
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Laying,, Road construction, skating rink
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Compaction of soil with a vibrating plate
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Cutting machine
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Crane
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Blows on concrete, Hammer and chisel
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Floor polisher
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The bulldozer starts, leaves
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The, Construction, loading of cement
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Open, Tool box, close the lock
★★★★★