TY - RPRT TI - Assessment, water-quality trends, and options for remediation of acidic drainage from abandoned coal mines near Huntsville, Missouri, 2003-2004 AU - Eric D. Christensen PY - 2005 DO - 10.3133/sir20055202 UR - https://pubs.usgs.gov/publication/sir20055202 ID - sir20055202 ER -