Related by context. Frequent words. (Click for all words.) 68 mine tailings 67 mill tailings 65 tailings 59 evaporation ponds 58 heap leach pad 57 tailings impoundment 56 tailing ponds 55 contaminated soils 54 headwater streams 54 Milltown Dam 53 Tailings 53 frac sand 53 tailings dam 52 leach pads 52 Mount Emmons 52 heap leach 52 heap leach operation 52 situ uranium 51 wellfield 51 streambeds 51 tailings pond 51 groundwater 51 Uranium Mine 51 dewatered 50 Homestake Mine 50 beneficiation plant 50 uranium mines 50 tailings disposal 50 dewater 50 ore 50 contaminated sediments 50 aquifer 50 dewatering 50 leach pad 50 fly ash 50 Uravan 49 contaminated soil 49 transuranic waste 49 contaminating groundwater 49 flotation mill 49 glacial till 49 lakebed 49 streambed 49 roadbeds 49 contaminated groundwater 49 sediment 49 radioactive wastes 49 quarry 49 mining 49 opencast mine 49 mined ore 49 alluvium 49 Umatilla Chemical Depot 48 Sheep Mountain 48 landfill 48 polluted groundwater 48 Rio Algom 48 dredge spoils 48 minesite 48 crushed limestone 48 leaching 47 Comstock Lode 47 Book Cliffs 47 sludge 47 Kennecott 47 quarries 47 gravel pit 47 rock quarry 47 dredged material 47 Yucca Mountain repository 47 decomposed granite 47 underground aquifer 47 topsoil 47 oxide ore 47 Sanitary Landfill 47 limestone quarry 47 smelter 47 headwaters 47 La Sal 46 Schefferville 46 gravel extraction 46 Superfund site 46 sewage lagoon 46 mines 46 hazardous waste landfill 46 heap leaching 46 slag heap 46 sulphide ore 46 roadbed 46 underground workings 46 woody debris 46 aquifers 46 radioactive waste 46 soils 46 Aquifer 46 mine 46 gravels 46 coal ash 45 valley fills 45 waste repository 45 earthen dams