Historical total and respirable silica dust exposure levels in mines and pottery factories in China

Scand J Work Environ Health. 1995;21 Suppl 2:39-43.

Abstract

Historical exposure estimates of total dust and respirable silica were made in a recent nested case-referent study of lung cancer among mine and pottery workers in China. Exposure to total dust and respirable silica was assessed in 20 mines and 9 pottery factories. The average total dust concentration was 7.26 mg center dot m-3, with a range from 17.68 mg center dot m-3 in the 1950s to 3.85 mg center dot m-3 in the 1980s, while the average respirable silica dust was 1.22 mg center dot m-3, with a range from 3.89 mg center dot m-3 in the 1950s to 0.43 mg center dot m-3 in the 1980s. The highest respirable silica dust occurred in the underground mining operations (1.43 mg center dot m-3), particularly for manual drillers (9.03 mg center dot m-3). Among all facility types, tungsten mines had the highest respirable silica dust exposure (1.75 mg center dot m-3), while the lowest exposure occurred in copper-iron mines (0.32 mg center dot m-3).

Publication types

  • Multicenter Study

MeSH terms

  • Ceramics*
  • China / epidemiology
  • Dust / analysis
  • Humans
  • Mining / statistics & numerical data*
  • Occupational Exposure / statistics & numerical data*
  • Retrospective Studies
  • Silicon Dioxide / analysis*
  • Time Factors

Substances

  • Dust
  • Silicon Dioxide