Subject
Gas well drilling Environmental aspects
25
Coal mines and mining Environmental aspects
16
Geology, Stratigraphic
14
Oil and gas leases
12
Land use Planning
11
Gas industry Environmental aspects
10
Geology
10
Public lands
9
Water quality
9
Groundwater
8
Land use
8
Wyoming Description and travel
8
Wyoming History
8
Coal Geology
7
Coalbed methane Environmental aspects
7
Natural gas pipelines Environmental aspects
7
Public lands Management
7
Conservation of natural resources
6
Gas wells Environmental aspects
6
Natural gas Environmental aspects
6
Natural resources Management
6
Stream measurements
6
Frontier and pioneer life
5
Land titles Registration and transfer
5
Natural gas Prospecting Environmental aspects
5
Strip mining Environmental aspects
5
Wild horses Control Environmental aspects
5
Wilderness areas
5
Wildlife conservation
5
Wyoming
5
Bighorn National Forest (Wyo.)
4
Black Hills (S.D. and Wyo.) Description and travel
4
Borings
4
Cattle trade
4
Coal leases
4
Coalbed methane
4
Forest reserves
4
Grand Teton National Park (Wyo.)
4
Herding Environmental aspects
4
Indians of North America
4
Mine gases
4
Natural resources
4
Thunder Basin National Grassland (Wyo.)
4
Yellowstone National Park
4
Coal leases Environmental aspects
3
Coalbed methane drainage Environmental aspects
3
Dams Environmental aspects
3
Formations (Geology)
3
Land use Environmental aspects
3
Medicine Bow National Forest (Wyo.)
3
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