TY - RPRT TI - Downflow limestone beds for treatment of net-acidic, oxic, iron-laden drainage from a flooded Anthracite Mine, Pennsylvania, USA: 1. Field evaluation AU - C.A. Cravotta AU - S.J. Ward PY - 2008 DO - 10.1007/s10230-008-0029-5 UR - https://pubs.usgs.gov/publication/70033431 ID - 70033431 ER -