Related by context. Frequent words. (Click for all words.) 49 sprayed foam 49 flammable substance 49 flammable gases 48 nitric acid 47 hydrochloric acid 47 hazmat crews 47 butane 47 ammonia 47 highly flammable 47 potassium hydroxide 46 flammable substances 46 hexane 46 vapors 46 highly combustible methane 46 sodium hydroxide 46 flammable liquid 46 colorless liquid 45 acetylene 45 Hydrochloric acid 45 hydrofluoric acid 45 gaseous hydrogen 45 Upon arrival firefighters 45 oily substance 45 Hazmat crews 45 Firefighters doused 45 hydrogen fluoride 45 Sulfur dioxide 45 Tesoro refinery 44 gasoline vapors 44 drilling rig exploded 44 propane tank exploded 44 mercaptan 44 calcium carbide 44 Horizon exploded 44 methanol 44 distributes atmospheric 44 thinners 44 oily residue 43 liquid ammonia 43 incomplete combustion 43 Hydrogen sulfide 43 hydrogen chloride 43 naptha 43 methylene chloride 43 Reformulated gasoline blendstock 43 Olefins 43 formic acid 43 degreasing 43 Hazardous Materials Team 43 sulfuric acid 43 hydrogen sulfide 42 inhaling fumes 42 propane leak 42 welding torch 42 ammonia fumes 42 chemical 42 smelling smoke 42 highly inflammable 42 vapor cloud 42 hydrogen sulphide 42 reactants 42 tetrachlorethylene 42 acetylene torch 42 carbonic acid 42 hydraulic fluid 42 Firefighters extinguished 42 Phenol 42 rig Deepwater Horizon 42 ethylene oxide 42 fracking fluid 41 methyl alcohol 41 Hazardous Materials 41 Anhydrous ammonia 41 smoky smell 41 caustic chemicals 41 chemical solvents 41 inhaling smoke 41 sulfuric 41 superheated steam 41 diesel fuel 41 firefighters extinguished 41 Hazardous Material 41 compressed air 41 xylene 41 chemicals 41 muriatic acid 41 acrylonitrile 41 chemical vapors 41 hazardous material 41 oxidizer 41 depressurized 41 Capt. Terry Seelig 41 chlorine 41 paint thinners 40 lubricating oil 40 methane 40 overpowering smell 40 solvents 40 paint thinner 40 flammable 40 propane butane