Subject
Coalbed methane
Natural gas
6
Coal Geology
4
Coal
3
Firedamp
2
Greenhouse gases
2
Groundwater
2
Methane industry
2
Mine gases
2
Natural gas Prospecting
2
Natural gas reserves
2
Sanitary landfills
2
Bituminous coal
1
Coal Analysis
1
Coal Storage
1
Coalbed methane Environmental aspects
1
Drill cores
1
Gas well drilling Environmental aspects
1
Gas wells
1
Geology
1
Geology, Stratigraphic
1
Geology, Structural
1
Mine gases Analysis
1
Mine ventilation
1
Natural gas Geology
1
Powder River Basin (Wyo. and Mont.)
1
Seismic prospecting
1
Water Composition
1