Related by context. Frequent words. (Click for all words.) 70 Enogex 64 Oneok 62 ONEOK 62 MDU Resources Group 60 WGL Holdings 60 MDU Resources 60 MarkWest Energy Partners 59 Energen 59 ONEOK Partners 59 Quest Resource 58 UniSource Energy 58 Crosstex Energy 58 Approach Resources 58 NiSource 58 Ultra Petroleum 58 Transfer Partners LP 57 El Paso Pipeline 57 Comstock Resources 57 Pepco Holdings 57 EVEP 56 AGL Resources 56 GMXR 56 OGE 56 EXCO Resources Inc. 56 Legacy Reserves 55 Laclede Group 55 Sempra Energy NYSE SRE 55 Spectra Energy Partners 55 MarkWest 55 Rosetta Resources 55 CNX Gas 55 Atmos Energy 55 BOK Financial 55 Magnum Hunter 55 NYSE PCG 55 PNM Resources 54 Questar Corp. 54 Transfer Equity 54 TECO Energy 54 NGAS 54 Allete 54 GreenHunter Energy 53 Atlas Pipeline 53 Hercules Offshore 53 Allis Chalmers Energy 53 Martin Midstream Partners 53 PowerSecure 53 Vectren 53 Alliant Energy Corporation 53 Whiting Petroleum Corporation 53 Quicksilver Resources 53 Inergy LP 53 WPS Resources 53 DCP Midstream Partners LP 52 Westlake Chemical 52 Magellan Midstream Partners LP 52 Spectra Energy 52 Petrohawk 52 Chesapeake Utilities 52 AMERIGROUP 52 Integrys Energy Group 52 Cimarex 52 Bois d' Arc 52 ALLETE 52 International NYSE EIX 51 Avista Corp. 51 Advantage IQ 51 Carrizo Oil & 51 MMLP 51 ITC Holdings 51 CenterPoint Energy 51 CVR Energy 51 NJNG 51 Harvest Natural Resources 51 AEP 51 Buckeye Partners LP 51 MarkWest Energy Partners LP 51 NYSE FE 50 Cleco Corp. 50 Cullen Frost 50 SandRidge 50 Peoples Bancorp 50 ENGlobal 50 BPZ 50 Badger Meter 50 Spectra Energy Corp 50 Vanguard Natural Resources 50 Energy NYSE DUK 50 Weingarten Realty Investors 50 Sempra Generation 50 NYSE ECA 50 Westar Energy 50 Windstream 50 TXCO 50 Renasant 50 Commerce Bancshares 50 Buckeye GP 50 Helix Energy 50 Denbury Resources Inc. 49 NW Natural 49 Bronco Drilling Company