Metal and Mineral Concentrations in Lungs of Bituminous Coal Miners

Abstract

Abstract The concentrations of metals and minerals in lungs of bituminous coal miners are the subject of a continuing study that includes gravimetric determinations of coal and total dust, chemical determinations of free silica, and quantitative spectrographic analyses of metallic and other elemental constituents. The free silica and the elemental constituents of the residual mineral deposits were determined by phosphoric acid and quantitative emission spectrographic methods, respectively.