Text For Citation: 01 Item/Group: 014 Hazard:

29 CFR 1910.1018(n)(1)(i)(A): A medical surveillance program was not instituted for all employees who were or will be exposed to inorganic arsenic in excess of the action level, without regard to the use of respirators, at least 30 days per year: a) U.S. Minerals-Anaconda, MT site: On or about November 03, 2015, and at times prior, employees throughout the facility were exposed to inorganic arsenic exceeding the Permissible Exposure Limit (PEL) of 0.01 milligrams per cubic meter of air while performing bagging operations, screen change out, and general labor operations. Personal air sampling performed for 410 minutes indicated an exposure to 0.0125 milligrams per cubic meter of air, approximately 1.25 times the PEL. Zero exposure was assumed for the 70 minutes not sampled. b) U.S. Minerals-Anaconda, MT site: On or about November 03, 2015, and at times prior, employees throughout the facility were exposed to inorganic arsenic exceeding the Permissible Exposure Limit (PEL) of 0.01 milligrams per cubic meter of air while performing bagging operations, screen change out, and general labor operations. Personal air sampling performed for 325 minutes indicated an exposure to 0.0156 milligrams per cubic meter of air, approximately 1.56 times the PEL. Zero exposure was assumed for the 155 minutes not sampled. c) U.S. Minerals-Anaconda, MT site: On or about November 03, 2015, and at times prior, employees throughout the facility were exposed to inorganic arsenic exceeding the Permissible Exposure Limit (PEL) of 0.01 milligrams per cubic meter of air while performing bagging operations, screen change out, and general labor operations. Personal air sampling performed for 390 minutes indicated an exposure to 0.0125 milligrams per cubic meter of air, approximately 1.25 times the PEL. Zero exposure was assumed for the 90 minutes not sampled. d) U.S. Minerals-Anaconda, MT site: On or about November 04, 2015, and at times prior, employees throughout the facility were exposed to inorganic arsenic exceeding the Permissible Exposure Limit (PEL) of 0.01 milligrams per cubic meter of air while performing bagging operations, screen change out, and general labor operations. Personal air sampling performed for 375 minutes indicated an exposure to .0475 milligrams per cubic meter of air, approximately 4.75 times the PEL. Zero exposure was assumed for the 105 minutes not sampled. e) U.S. Minerals-Anaconda, MT site: On or about November 05, 2015, and at times prior, employees throughout the facility were exposed to inorganic arsenic exceeding the Permissible Exposure Limit (PEL) of 0.01 milligrams per cubic meter of air while performing bagging operations, screen change out, and general labor operations. Personal air sampling performed for 385 minutes indicated an exposure to .0367 milligrams per cubic meter of air, approximately 3.67 times the PEL. Zero exposure was assumed for the 95 minutes not sampled. f) U.S. Minerals-Anaconda, MT site: On or about October 21, 2015, and at times prior, employees throughout the facility were exposed to inorganic arsenic exceeding the Permissible Exposure Limit (PEL) of 0.01 milligrams per cubic meter of air while performing bagging operations, screen change out, and general labor operations. Personal air sampling performed for 182 minutes indicated an exposure to 0.0174 milligrams per cubic meter of air, approximately 1.74 times the PEL. Zero exposure was assumed for the 298 minutes not sampled. Note: U.S. Minerals processes low silica material into roofing granules and abrasives for shipment in rail, truck and bulk bag quantities. Standard abrasive grades (1240, 2040, and 3060) are available as well as custom blends. This is the only process that is done at this location and it has been in operation since October 26, 2010. This process is completed on one shift per day, five days per week. This plant is operational year round. The requirement for a 30 day per year exposure has been met.