March 13: Portrait of Construction Workers’ Exposure to Silica

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The IRSST published a study on construction workers’ exposure to silica. Researchers developed a database on occupational exposure to identify tasks and tools that most expose workers to silica and the job designations with the highest risk, such as sawing masonry pieces with portable masonry saws, tunnelling and grinding joints of brick or stone. As for the occupations most exposed to silica, the study suggests that workers working underground and operators of heavy equipment for the drilling of tunnels form one group that could be exposed to concentrations exceeding the prescribed levels.