Crane:
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Jackhammer, Road construction
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Diesel engine
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Construction, concrete processing
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Open, close the lock, Tool box
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Rough sandpaper, Sandpaper
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Hammer hammering a nail into a tree
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Air rivet gun
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Bulldozer starts, expects to be jammed
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Tool box dragged across the floor
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Hammering a brick wall
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Skating rink, Road construction, laying,
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Bulldozer working
★★★★★