0:08
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Janitor's cart rolls on hard surface
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0:09
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Janitor's cart rolls on hard surface
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0:08
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Janitor's cart rolls on hard surface
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0:09
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Constant floor sweeping
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0:05
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Buffing machine revving a few times.
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0:06
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Buffing machine running, long.
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0:03
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Buffing machine running, short
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0:01
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Buffing machine revving.
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