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Quartz exposure levels in the underground and surface coal mining industry

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      <subfield code="a">Quartz exposure levels in the underground and surface coal mining industry</subfield>
      <subfield code="c">S.M. Ainsworth... [et al.]</subfield>
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      <subfield code="a">Occupational quartz exposure data gathered from the Mine Safety and Health Administration's respirable dust enforcement program and a program to monitor quartz exposure in several mining occupations were compiled and analyzed to assess the status of quartz exposures in the coal mining industry</subfield>
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      <subfield code="a">American Industrial Hygiene Association journal</subfield>
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      <subfield code="t">American Industrial Hygiene Association journal</subfield>
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      <subfield code="g">Vol. 56, nº 10, October 1995 ; p. 1002-1007</subfield>
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