TY - RPRT TI - Investigating hydraulic connections and the origin of water in a mine tunnel using stable isotopes and hydrographs AU - Katherine Walton-Day AU - Eileen Poeter PY - 2009 DO - 10.1016/j.apgeochem.2009.09.015 UR - https://pubs.usgs.gov/publication/70003362 ID - 70003362 ER -