TY - RPRT TI - A ground electromagnetic survey used to map sulfides and acid sulfate ground waters at the abandoned Cabin Branch Mine, Prince William Forest Park, northern Virginia gold-pyrite belt AU - Jeffrey C. Wynn PY - 2000 DO - 10.3133/ofr00360 UR - https://pubs.usgs.gov/publication/ofr00360 ID - ofr00360 ER -