Results: 1 - 2 of 2
Dec 31, 1979
Bulletin
… effects of mining activity on water quality vary in intensity, … occasionally exceed drinking water standards regardless of the … are well below drinking water standards. … Hackbarth, D.A. …
Mar 31, 2006
Geo-Note
… coal holes, a minimum of 5432 water wells and more than 18 019 … ooidal ironstone; d) 80 water wells intersected the Bad … unit or ironstone and 109 water wells intersected coal; and …