Related by context. Frequent words. (Click for all words.) 56 lignite coal 53 sub bituminous coal 52 coal 52 bituminous coal 51 Lignite 51 lignite 50 Supercritical 47 PRB coal 47 ferromanganese 45 Ethane 45 coal gasification 45 frac sand 45 Coal gasification 44 sulfur 44 syngas 44 Activated Carbon 44 calorific value 44 Coal seam 44 circulating fluidized bed 44 sulfur coal 43 desulphurisation 43 pelletizing 43 Bitumen 43 supercritical 43 Soda ash 43 adipic acid 43 elemental sulfur 43 pulverized coal 43 #/MWh [002] 43 CO2 sequestration 43 Syngas 43 Coal 43 bitumen 42 Tar sands 42 bituminous 42 cement kiln 42 Metallurgical coal 42 magnesite 42 gasified 42 Gasification 42 coalbed methane CBM 42 petcoke 42 BioOil 42 Powder River Basin 42 coal seams 42 ethylene propylene 41 briquette 41 natural gas 41 Tailings 41 cathode copper 41 Sulfate 41 lubricating oils 41 Sequestration 41 Vermiculite 41 Butadiene 41 feedstock 41 gasification 41 Glycol 41 oil sands 41 carbonaceous 41 biomass 41 oxy fuel 41 coalbed methane wells 41 gasifiers 41 uranium vanadium 41 reciprocating engines 41 Niobium 40 biomass feedstock 40 thermal coal 40 MgO 40 SO2 emissions 40 Rhenium 40 gaseous fuels 40 copper ores 40 BTU 40 Soda Ash 40 phosphine 40 Btu 40 barite 40 sulphide nickel 40 Coal Seam Gas 40 Boddington mine 40 Gippsland Basin 40 nickel alloys 40 Condensate 40 biomass fuels 39 cetane 39 trona 39 kaolin 39 Combined Cycle 39 Steelmaking 39 coal fired 39 fluorspar 39 sinter 39 Caustic soda 39 flue gas 39 Georgina Basin 39 CBM wells 39 portland cement 39 Shouyang Block 39 Sulfur