Health Effects of Overexposure to Respirable Silica Dust
· limestone THIN SECTION 200x MAGNIFICATION . Respirable Silica Dust in Mining • Dust less than 10 microns in size (cannot be seen with the eye) • Overexposure can cause lung disease • Xray surveillance may be initial means of disease diagnosis • Current dust exposures limits established in 1977 • Occupational sampling conducted by MSHA to monitor exposure • Control technologies ...