Results: 1 - 6 of 6
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. …
Dec 31, 1955
Report
Jul 31, 1976
Open File Report
… established between air and water permeability within the coal … continuity exists between the water in the abandoned stripping …
Dec 31, 1983
Bulletin
… were subject to invasion by salt water during low stage and were … presence or absence of bottom water sands. Mapping of these …
Dec 31, 1963
Bulletin