RT Journal Article SR Electronic T1 EPA considers proposals to regulate coal ash: Hundreds of coal ash dumps, waste ponds may threaten health JF The Nation's Health JO Nations Health FD American Public Health Association SP 1 OP 14 VO 40 IS 9 A1 Johnson, Teddi Dineley YR 2010 UL http://www.thenationshealth.org/content/40/9/1.2.abstract AB