Excavator starts up, expects to be jammed:
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Leaves, Excavator starts
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Home construction, hammers, saws,
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Bobcat loader starts up, shuts down, waits
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Electric polished marble
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Start up, drive away, Bobcat loader
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Electric saw
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Sandpaper, rough sandpaper
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Bulldozer moving
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Jackhammer, Road construction
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Electric disc grinder
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Electric machine grinder
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Tool box dragged across the floor
★★★★★