Concrete mixer:
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Excavator approaching, jamming
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Manual grinder
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Construction of the road, clean the old
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Drill machine
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Excavator digs a hole
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Road construction, jackhammer
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Excavator starts up, expects to be jammed
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Staple gun
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Woodworking
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Electric hand grinder
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Construction, bulldozer, digging
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Compaction of soil with a vibrating plate
★★★★★