• Alliance Resource Partners, L.P.

• AllianceBernstein Holding L.P.

• AmeriGas Partners, L.P.*

• Atlas Energy, L.P.

• Atlas Pipeline Partners, L.P.*

• Blueknight Energy Partners, L.P.

• Buckeye Partners, L.P.

• Calumet Specialty Products Partners, L.P.

• Cedar Fair, L.P.

• Compressco Partners, L.P.

• DCP Midstream Partners, LP

• Dorchester Minerals, L.P.

• Energy Transfer Partners, L.P.

• Enterprise Products Partners L.P.

• EV Energy Partners, L.P.

• Exterran Partners, L.P.

• Ferrellgas Partners, L.P.

• Genesis Energy, L.P.

• Global Partners LP

• Inergy, L.P.

• Inergy Midstream, L.P.

• Kinder Morgan Energy Partners, L.P.

• Linn Energy, LLC

• Natural Resource Partners L.P.

• Oxford Resource Partners LP

• Penn Virginia Resource Partners, L.P.*

• Plains All American Pipeline, L.P.

• Regency Energy Partners LP

• Rhino Resource Partners LP

• Star Gas Partners, L.P.

• StoneMor Partners, L.P.*

• Suburban Propane Partners, L.P.

• Sunoco Logistics Partners, L.P.*

• Targa Resources Partners LP

• W.P. Carey & Co. LLC

• Williams Partners L.P.

* Headquartered in state