Drop, rattle of metal:
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Drone,, The movement of cars on the bridge
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Falling object on a metal surface
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Ringing chain
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Roller coaster, trolley noise, traffic
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Squeal of movement of metal on metal
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Squeaking metal
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Creaking metal from friction
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Dragging a metal object across the floor
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Metal trolley
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Big trolley being driven, metal creaks,
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Closing, Mailbox Opening
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Keying, Mailbox opening
★★★★★