0:03
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Metal roll-up door - knock and rattle. (2)
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0:02
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Metal roll-up door - knock and rattle. (1)
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0:39
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Knocking on heavy metal door - reverberant space.
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0:01
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Ice skates - knocking against each other. (45)
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Ice skates - knocking against each other. (44)
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Ice skates - knocking against each other. (43)
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Ice skates - knocking against each other. (42)
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Ice skates - knocking against each other. (41)
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Ice skates - knocking against each other. (40)
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Ice skates - knocking against each other. (39)
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Ice skates - knocking against each other. (38)
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Ice skates - knocking against each other. (37)
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Ice skates - knocking against each other. (36)
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Ice skates - knocking against each other. (35)
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Ice skates - knocking against each other. (34)
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Ice skates - knocking against each other. (33)
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Ice skates - knocking against each other. (32)
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Ice skates - knocking against each other. (31)
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Ice skates - knocking against each other. (30)
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Ice skates - knocking against each other. (29)
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