In the structure of the systematic investigation of the environment of the Singrauli coal field of the Singrauli and Sonbhadra Districts, mining activities are among the primary pollutant-producing sources of particulate matter. In this study, the age group found to receive the highest dose-and to be at highest risk for adverse health effects-was children at the age of 1 year. Furthermore, the inhalation dose and health risks are 1.4 times higher for actual mine workers when they are in the mine areas than for persons in non-mining, areas. Furthermore, inhalation doses were observed to be higher in summer than in winter and the rainy season. K E Y W O R D S exposure, health impact, mines, particulate matter Element Unit Range Average ± SD Range Average ± SD Range Range ± SD Range Average ± SD Range Average ± SD Range Average ± SD SPM g/m

Acid mine drainage (AMD) occurs naturally in abandoned coal mines, and it contains hazardous toxic elements in varying concentrations. In the present research, AMD samples collected from an abandoned mine were treated with fly ash samples from four thermal power plants in Singrauli Coalfield in the proximate area, at optimized concentrations. The AMD samples were analyzed for physicochemical parameters and metal content before and after fly ash treatment. Morphological, geochemical and mineralogical characterization of the fly ash was performed using SEM, XRF and XRD. This laboratory-scale investigation indicated that fly ash had appreciable neutralization potential, increasing AMD pH and decreasing elemental and sulfate concentrations. Therefore, fly ash may be effectively used for AMD neutralization, and its suitability for the management of coalfield AMD pits should be assessed further.

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