Related by context. Frequent words. (Click for all words.) 52 tailings 52 fracking 52 heap leaching 51 Integrated Gasification Combined Cycle 51 hydraulic fracturing 51 Radiation Control 51 mill tailings 51 contaminate groundwater 51 mining 50 hydrometallurgical 50 Hydraulic fracturing 50 uranium mining 50 mine tailings 50 groundwater 50 valley fills 50 dewatering 49 fracing 49 coal slurry 49 DEQ 49 coal gasification 49 Yucca Mountain repository 48 bioleaching 48 placer mining 48 polluted groundwater 48 coalbed methane 48 dewater 48 fly ash 48 injection wells 47 hydrofracking 47 uranium 47 COGCC 47 CDPHE 47 dissolved solids 47 Powertech 47 wellfield 47 uranium mines 46 INEEL 46 groundwater contamination 46 RCRA 46 Neslin 46 leaching 46 pollute groundwater 46 hydrogeological 46 flowback 46 pit heap leach 46 total dissolved solids 46 contaminated soils 45 chloramine 45 longwall mining 45 heap leach operation 45 Fracking 45 radioactive wastes 45 heap leach 45 contaminated groundwater 45 bed methane 45 arsenic 45 Environmental Quality DEQ 45 contaminate drinking 44 extraction 44 radium 44 NDEP 44 bio solids 44 Kennecott 44 environmentally sound 44 hydrofluoric acid 44 flowsheet 44 Omya 44 USEPA 44 selenium 43 thorium 43 mercury emissions 43 waste repository 43 Surface Mining 43 Clean Water Act 43 exploratory drilling 43 horizontal drilling 43 SNWA 43 gravity drainage 43 timber harvesting 43 hydrogeology 43 gravel extraction 43 aquifer 43 mountaintop mining 43 gasification 43 Mesabi Nugget 43 transuranic waste 43 Jerritt Canyon 43 Divine Strake 43 BioteQ 43 brines 43 cruel inhumane 43 mountaintop removal 43 Environmental Impact Statement EIS 43 underground aquifers 43 ash ponds 42 treated effluent 42 ADEQ 42 CERCLA 42 Emgold 42 shale 42 chloramines