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Man saying, "Will the plant nurse please report to..."
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Man saying, "Officer needed for confined space permit"
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Sharp boring of an industrial power drill in operation
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Man saying, "North gate is secure"
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Man saying, "Officer needed for confined space permit"
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Air ratchet working tightening a tire
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Truck horn beeping twice
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Truck driving by
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Short sharp hissing of air compressor air pressure releasing
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Grating and rasping spin deformation of industrial lathe in operation