Noise exposure reduction aboard an oceangoing hopper dredge

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      <subfield code="a">This investigation focused on crew noise exposure aboard an oceangoing hopper dredge. Noise exposure criteria were adopted based on 24-hr equivalent continuous sound level because of the absence of standards for U.S. shipboard noise exposure. Selective noise abatement and use of an enclosed operating station in the engine room were recommended to control engineering personnel noise exposure</subfield>
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      <subfield code="a">American Industrial Hygiene Association journal</subfield>
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      <subfield code="g">Vol. 51, nº 9, September 1990 ; p. 469-474</subfield>
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