Continued increase in prevalence of r-type opacities among underground coal miners in the USA.
Noemi B HallDavid J BlackleyCara N HalldinA Scott LaneyPublished in: Occupational and environmental medicine (2019)
The prevalence of r-type opacities on the radiographs of Appalachian underground coal miners continues to increase, implicating exposure to crystalline silica in respirable coal mine dust. The current findings underscore the importance of monitoring and controlling exposure to silica in coal mines.