Geographic information systems 3 Geological Survey (U.S.) 3 Climatic changes 2 Digital mapping 2 Earth sciences -- Research -- United States 2 Emergency management -- United States 2 Engineering geology 2 more ... Hazard mitigation -- United States 2 Mines and mineral resources -- United States 2 Natural gas reserves -- United States 2 Public-private sector cooperation -- United States 2 Remote sensing 2 Acid mine drainage 1 Acid mine drainage -- Research -- United States 1 Africa -- Economic conditions 1 Astrophysics 1 Cadastres -- United States 1 Carbon -- Congresses 1 Cartography -- United States 1 Civil defense -- United States 1 Climatic changes -- California 1 Climatic changes -- Environmental aspects 1 Climatic changes -- Oregon 1 Coal ash -- Environmental aspects 1 Coal mines and mining -- Waste disposal -- United States 1 Coal--United States 1 Coalbed methane--West (U.S.) 1 Coast changes -- California 1 Coast changes -- Oregon 1 Communication in meteorology -- United States 1 less ...