• AllianceBernstein Holding, L.P.

• Alliance Resource Partners, L.P.

• AmeriGas Partners, L.P.

• Atlas Pipeline Partners, L.P.

• Blueknight Energy Partners, L.P.

• Boardwalk Pipeline Partners, L.P.

• Buckeye Partners, L.P.

• Calumet Specialty Products Partners, L.P.

• Cedar Fair, L.P.*

• DCP Midstream Partners, L.P.

• Enbridge Energy Partners, L.P.

• Energy Transfer Partners, L.P.

• Enterprise Products Partners, L.P.

• EV Energy Partners, L.P.

• Ferrellgas Partners, L.P.

• Inergy, L.P.

• Kinder Morgan Energy Partners, L.P.

• Natural Resource Partners, L.P.

• Plains All American Partners, L.P.

• StoneMor Partners, L.P.

• Suburban Propane Partners, L.P.

• Sunoco Logistics Partners, L.P.

• TC Pipelines, L.P.

• TransMontaigne Partners, L.P.

• W.P. Carey & Co. LLC

* Headquartered in state