• AmeriGas Partners, 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.

• Dorchester Minerals, L.P.

• Enbridge Energy Partners, L.P.

• Energy Transfer Partners, L.P.

• Enterprise Products Partners, L.P.

• Ferrellgas Partners, L.P.*

• Inergy, L.P.*

• Kinder Morgan Energy Partners, L.P.

• Magellan Midstream Partners, L.P.

• NuStar Energy, L.P.

• ONEOK Partners, L.P.

• Plains All American Partners, L.P.

• StoneMor Partners, L.P.

• Sunoco Logistics Partners, L.P.

• TransMontaigne Partners, L.P.

• W.P. Carey & Co. LLC

*Headquartered in state