Henry's Knob Site Case Study Revitalizing Mine Tailings in ...
fertile soils. The site includes a 7-acre former open pit mine, tailings pond, spoils piles and remnant mine operations. In the 1950s and 1960s, Commercialores mined the site for kyanite (see text box). During the mining process, waste rock and spoils were dewatered in ponds and piles. Acid mine drainage and acid rock drainage impacted surface