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 … surface mining of coal on water chemistry near Grande Cache, …
Dec 31, 1970
Earth Sciences Report
… groundwater probability, water levels, hydrochemistry, … may range from 25 to 100 igpm. Water quality is generally good …