@misc{indiciae80fc05af94a1,
  title = {Optimization of limestone drains for long- term treatment of acidic mine drainage, Swatara Creek Basin, Schuylkill County, PA},
  author = {Charles A. Cravotta and S.J. Ward and Daniel J. Koury and R. D. Koch},
  year = {2004},
  doi = {10.21000/jasmr04010366},
  url = {https://pubs.usgs.gov/publication/70189374},
  note = {Source identifier: 70189374}
}