Sandpaper, Fine Emery:
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Bobcat loader approaching, jamming
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Hammer and chisel, blows on concrete
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Expects to be jammed, Bulldozer starts
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The, Construction, loading of cement
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End of pouring, cement loading, Construction
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Road construction, jackhammer
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Floor polisher
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Work with a shovel
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Bulldozer working
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Excavator digs a hole
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A circular saw
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Screwdriver screwing a screw into a tree
★★★★★