Help workers breathe in confined spaces : how to keep workers safe with the right respirator

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      <subfield code="a">Help workers breathe in confined spaces</subfield>
      <subfield code="b">: how to keep workers safe with the right respirator</subfield>
      <subfield code="c">by Jan Bone</subfield>
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      <subfield code="a">Confined spaces exist in a variety of equipment and locations. These range from boilers, furnaces, silos, manholes and tunnels to jet-fuel cells, railway thank cars or food-storage bins. Workers enter these often dangerous arenas for a variety of reasons. Companies that send workers into permit-required confined spaces should first use engineering controls to eliminate hazards. Such controls include elimination or containment of contaminants, or continous forced-air ventilation</subfield>
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      <subfield code="g">nº 6, June 1993 ; p. 58-61</subfield>
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