Related by context. Frequent words. (Click for all words.) 58 saline aquifers 55 minable 54 insitu 54 coal seams 53 coal seam 52 Coal seam 51 Coalbed methane 51 sub bituminous coal 50 sequester carbon dioxide 49 potentially mineable 49 geologic formations 49 basalt rock 49 mineral ores 49 potent greenhouse gas 49 methane CH4 49 silts 49 uraniferous 49 depositional 48 frac sand 48 hydro carbons 48 Contaminated soil 48 tremolite 48 coal 48 coalbed methane wells 48 extractable 48 clastic 48 glacial till 47 kerogen 47 dewatered 47 highwall 47 eU#O# 47 dewater 47 alluvial diamonds 47 evaporation ponds 47 unmined 47 undrained 47 Canning Basin 46 hydrothermal fluids 46 Ilmenite 46 alluvial deposits 46 gasified 46 mined 46 placer deposits 46 Cluff Lake 46 bauxite deposits 46 naturally occurring mineral 46 breccia pipes 46 beneficiated 46 magnetite ore 46 tailing ponds 46 bauxite ore 46 Alluvial 46 diatomite 46 geological formations 46 sulfide minerals 46 radioactively contaminated 46 Marcellus shale formation 46 kimberlitic 46 CO2 sequestration 46 lignite coal 46 Tar sands 46 UG2 45 surficial 45 settling ponds 45 Ulaan Ovoo 45 haematite 45 Otjikoto 45 methane 45 bituminous coal 45 Magnetite 45 sandstone reservoir 45 slurry 45 calcrete 45 carbonaceous 45 acid leaching 45 Merensky Reef 45 drillable 45 combustible gases 45 copper sulphide 45 sulphide deposits 45 Georgina Basin 44 Horizontal drilling 44 sandstone reservoirs 44 laterite 44 uneconomic 44 Bentonite 44 miscible 44 carnallite 44 sulfuric 44 mineshafts 44 Barapukuria 44 Radioactive waste 44 Chromite 44 cretaceous 44 Upper Cretaceous 44 mine tailings 44 silica dust 44 Asbestos fibers 44 unconventional reservoirs 44 openpit 44 Surat Basin