Abstract
The goal of this project is to establish the minimum sampling density required to accurately characterize a volume of Middle Pennsylvanian interburden. This project is significant to the coal industry of West Virginia in that it will allow mining operators to more precisely predict acid mine drainage (AMD) potential of interburdens and overburdens. The field area for this project is located at an active surface mine in southern West Virginia. Samples were collected from air rotary drill cuttings during the drilling of shot holes. Representative samples were taken of continuous 1.2 m (4 ft.) intervals down each drill hole. Three analyses were performed on all samples: Total percent sulfur by total combustion, X-ray diffractometry, and elemental analysis by X-ray fluorescence. The known elements and minerals that have the greatest effect on AMD were used in the interpretations. Those elements and minerals are total percents.
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