Development of a model to aid in reconstruction of historical silica dust exposures in the taconita industry

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      <subfield code="a">This paper describes a quantitative model to convert historical environmental data in the taconite industry into a form consistent with current sampling methods and results for silica-containing dust, and, therefore, will enable past exposure histories to be used. In this study, parallel sampling results from the environmental data base were used to obtain a coefficient for the conversion of impinger-particle counts to filter-respirable mass sampling results</subfield>
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      <subfield code="g">Vol. 48, nº 11, November 1987 ; p. 914-918</subfield>
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