Related by context. Frequent words. (Click for all words.) 47 propane 37 natural gas 36 storage tanks 36 propane tank 35 Propane 35 gas 34 carbon monoxide 34 MarkWest 33 overbilled 32 ethane 32 serviced 31 butane 31 liquefied petroleum gas 31 accelerants 31 overcharged 31 Kinder Morgan 31 flammable liquids 31 propane tanks 31 chlorine 30 wood pellet 30 compressor 30 overcharges 30 electrical 30 acetylene 30 anhydrous ammonia 30 diesel fuel 30 purchased 30 tanker trucks 30 invoiced 30 boilers 30 tanker truck 29 ammonium nitrate 29 wood pellets 29 faulty 29 air compressors 29 fire marshal 29 defective 28 flammable liquid 28 liquefied gas 28 carbon monoxide poisoning 28 ammonia 28 undelivered 28 flammable materials 28 negligent 28 propylene 28 therms 27 heating oil 27 tampered 27 overbilling 27 Natural gas 27 Nicor 27 refined fuels 27 per therm 27 invoices 27 boiler 26 flammable 26 reimbursed 26 invoice 26 helium 26 compressed air 26 Finkelstein Thompson 25 water heater 25 burning stove 25 nitrous oxide 25 overcharging 25 reimbursement 25 grossly negligent 25 improperly 25 UGI 24 wood stove 24 furnace 24 acetone 24 kickback scheme 24 refrigerant 24 ammonium nitrate fertilizer 24 combustible materials 24 Gas 24 heater 24 overcharge 23 Cenex 23 reimbursements 23 falsifying records 23 transformer 23 homemade explosives 23 Natural Gas 23 extension cord 23 woodstove 22 billings 22 lighter fluid 22 acted improperly 22 gasoline 22 methanol 22 gas canister 22 sold 22 mistakenly 22 overpayment 22 combustibles 22 ignition 22 combustion 22 bought 22 misclassified