A comparative analysis of the elemental composition of mining- generated and laboratory-generated coal mine dust.
NIOSH 1990 Sep; :303-311
Research was conducted at several underground coal mines located in the eastern and midwestern United States, and in the laboratory to characterize the elemental composition of mining generated airborne dust and laboratory generated dust derived from samples taken from these mines. The purpose was to determine if a relationship existed between mining generated and laboratory generated dust from the same mine. Analyses indicated that the carbon or the organic fraction in the coal dust appeared to increase with decreasing dust size. Evidence indicated that elements such as lead (7439921), nickel (7440020), and zinc (7440666) were contained in greater amounts in bituminous coal miner's lungs than normal concentrations of these elements. If so, potential problem mines or coal seams may be identified during planning stages. Barium (7440393), antimony (7440360), cadmium (7440439), and sodium (7440235) were the most difficult elements for the laboratory generated dust to produce in detectable amounts. These were detected in the mine generated dust from mines where roof and floor rock were mined with the coal seam. It was noted that poor detection of these elements in the laboratory generated dust may be due to inadequate grinding of the rock component during sample pulverization. The authors recommend that a refined procedure of the one used in this research be developed to better predict the mining generated dust when rock is concurrently mined with the coal seam.
Coal-mining; Mining-industry; Coal-miners; Coal-dust; Airborne-dusts; Mineral-dusts; Respiratory-system-disorders; Dust-analysis
7439-92-1; 7440-02-0; 7440-66-6; 7440-39-3; 7440-36-0; 7440-43-9; 7440-23-5
Proceedings of the VIIth International Pneumoconioses Conference