Subject
Reclamation of land
199
Reclamation of land Law and legislation
50
Strip mining Environmental aspects
38
Revegetation
29
Coal mines and mining Environmental aspects
26
Photovoltaic power generation Finance
18
Brownfields
17
Solar power plants Location Planning
17
Mountain plants
15
Reclamation of land Environmental aspects
15
Water quality
13
Tundra plants
12
Water resources development
12
Reclamation of land History
11
Irrigation
10
Irrigation laws
10
Mines and mineral resources
9
Water resources development Law and legislation
9
Hazardous waste site remediation
8
Land titles Registration and transfer
7
Appropriations and expenditures
6
Land use
6
Reclamation of land Government policy
6
Restoration ecology
6
Abandoned mined lands reclamation
5
Oil-shales
5
Strip mining Law and legislation
5
Mineral industries Environmental aspects
4
Oil-shale industry Environmental aspects
4
Public lands
4
Reclamation of land Safety regulations
4
Strip mining
4
Water resources development History
4
Acid mine drainage Environmental aspects
3
Acreage allotments Law and legislation
3
Coal mines and mining
3
Erosion
3
Federal aid to water resources development
3
Groundwater
3
Groundwater Pollution
3
Hazardous waste sites Law and legislation
3
History
3
Hydroelectric power plants
3
Hydroelectric power plants Law and legislation
3
Irrigation History
3
Irrigation districts
3
Management
3
Mine drainage Environmental aspects
3
Mine soils
3
Mining law
3
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