Bulldozer working:
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Excavator digs a hole
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Excavator Passes By
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Hammer and chisel, blows on concrete
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Woodworking
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Truck crane works
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Knocking a hammer indoors with an echo
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Hammer and chisel, wood blows
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Digging in the tool box
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Metal file
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Hammering a brick wall
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Electric surface grinding machine
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Screwdriver screwing a screw into a tree
★★★★★