Subject
Coal leases
Coal mines and mining Environmental aspects
20
Strip mining Environmental aspects
10
Coal mines and mining
8
Public lands
8
Environmental impact statements
5
Navajo Indians Land tenure
5
Coal mines and mining Law and legislation
3
Land titles Registration and transfer
3
Oil and gas leases
3
Public lands Management
3
Coal Costs
2
Coal Prices
2
Coal mines and mining Government ownership
2
Coal mines and mining Government policy
2
Coal mines and mining Valuation
2
Coal trade Government policy
2
Coal trade Mathematical models
2
Coalbed methane Law and legislation
2
Energy development Law and legislation
2
Environmental policy
2
Forest conservation
2
Mining law
2
Real property, Exchange of
2
All terrain vehicles Environmental aspects
1
Coal
1
Coal Environmental aspects
1
Coal mines and mining Economic aspects
1
Coal mines and mining Rates
1
Coal reserves
1
Conservation of natural resources
1
Continental shelf Law and legislation
1
Elk Effect of habitat modification on
1
Gas industry Environmental aspects
1
Geology Data processing
1
Geophysics Data processing
1
Hydrology
1
Indians of North America Economic conditions
1
Land use
1
Land use Law and legislation
1
Land use Management
1
Lignite
1
Mine valuation
1
Mineral lands Management
1
Mines and mineral resources
1
Mining leases
1
Montana
1
Natural gas
1
Petroleum
1
Petroleum industry and trade Environmental aspects
1
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