Exhibit 99

Information Regarding Joint Filer



Name:  MGG Midstream Holdings GP, LLC



Address: One Williams Center

  Tulsa, OK  74172



Designated Filer: MGG Midstream Holdings, L.P.



Issuer & Ticker Symbol: Magellan Midstream Holdings, L.P. (MGG)



Date of Event Requiring Statement: December 4, 2008









Signature of Joint Filer





MGG Midstream Holdings GP, LLC





By: ________________________________

Name: John D. Chandler

Title:   VP, CFO & Treasurer



Date:  December 4, 2008