Subject
Coal gasification
1
Coal liquefaction
1
Congresses
1
Continental margin
1
Environmental aspects
1
Environmental quality
1
Geologie
1
Geology
1
Ground water
1
HYDROLOGY
1
Hydrologic cycle
1
Hydrology, Karst
1
Karst
1
Marine geology
1
Marine sedimentation
1
Mines, abandoned
1
Mining engineering
1
Petrology
1
Society for Mining, Metallurgy, and Exploration (U.S.)
1
Water management
1
acid mine drainage
1
mineral industry
1
reclamation
1
waste disposal
1
water quality
1