Changes in lung function of granite crushers exposed to moderately high silica concentrations : a 12 year follow up

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      <subfield code="a">Changes in lung function of granite crushers exposed to moderately high silica concentrations</subfield>
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      <subfield code="c">P. Malmberg, H. Hedenström, B.M. Sundblad</subfield>
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      <subfield code="a">45 granite crushers and 45 age and smoking matched referents underwent pulmonary function tests in 1976 and 1988. On average, the granite crushers at follow up had worked for 22 years, were 52 years old, and had inhaled a cumulated amount of 7 mg of silica in the respirable dust fraction. The functional changes suggest the presence of airways obstruction and increased compliance of the lungs. Exposure to silica at concentrations of about twice the present TLV was thus associated with airways obstruction and loss of elastic recoil rather than fibrosis and a restrictive function loss as seen in silicosis. The changes were on average small, but in some tobacco smokers more pronounced changes were found</subfield>
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      <subfield code="a">British journal of industrial medicine</subfield>
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      <subfield code="t">British journal of industrial medicine</subfield>
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      <subfield code="g">nº 8, August 1993 ; p. 726-731</subfield>
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