Alliance Resource Partners, L.P.

AmeriGas Partners, L.P.

Cedar Fair, L.P.

Enbridge Energy Partners, L.P.

Energy Transfer Partners, L.P.

Enterprise Products Partners L.P.

Ferrellgas Partners, L.P.

Fortress Investment Group LLC

Genesis Energy, L.P.

Inergy, L.P.

Kinder Morgan Energy Partners, L.P.

Magellan Midstream Partners, L.P.

Natural Resource Partners L.P.

NuStar Energy L.P.

Plains All American Pipeline, L.P.

Spectra Energy Partners, LP

StoneMor Partners, L.P.

Suburban Propane Partners, L.P.

TransMontaigne Partners, L.P.

W. P. Carey & Company, LLC

Williams Partners L.P.