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A person walking on gritty concrete and debris
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Metal rake dropped on concrete floor impact with bounce
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Dragging a heavy log, stone or concrete slab across dirt surface
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Two jackhammers with different pitch drilling concrete on the street in New York City, close perspective
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Dragging concrete slabs on concrete
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Metal bolt falling on concrete
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Slamming a brick or stone against another stone.
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Scrapping and scrubbing a concrete slab on a metal surface
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Concrete slab scraping on wood, fast scrubbing
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Concrete slab scraping on wood
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