Released on: October 7, 2008, 8:14 am

Press Release Author: Thompson & Knight LLP

Industry: Law

Press Release Summary: Thompson & Knight LLP has assisted Eagle Rock Energy Partners
L.P. (“Eagle Rock”) with the acquisition of 100% of the outstanding units of
Millennium Midstream Partners LP (“MMP”), and thereby its ownership in MMP's
operating subsidiaries, for approximately $235.5 million.

Press Release Body: The global law firm of Thompson & Knight LLP has assisted Eagle
Rock Energy Partners L.P. (“Eagle Rock”) with the acquisition of 100% of the
outstanding units of Millennium Midstream Partners LP (“MMP”), and thereby its
ownership in MMP's operating subsidiaries, for approximately $235.5 million.

The Thompson & Knight team advising on this project was led by Partners Barry Davis
and Thomas R. Lamme, both in the Corporate and Securities Practice Group in the
Firm’s Houston office. The team who assisted on this transaction included Renée A.
Dupré, Christopher S. Farley, David T. Grand Jr., and Julie A. Mediamolle of the
Firm’s Houston Office; Jolisa Melton Dobbs, Yan Gao, Todd D. Keator, Marc H. Klein,
Jason Patrick Loden, Alyson Outenreath, Micah R. Prude, Elizabeth A. Schartz, R.
David Wheat, David S. White, Arthur J. Wright, and Shelly A. Youree of the Firm’s
Dallas office; and Reagan A. Birt and Sarah E. McLean of the Firm’s Austin office.

Eagle Rock is a growth-oriented master limited partnership engaged in three
businesses: a) midstream, which includes (i) gathering, compressing, treating,
processing, transporting, and selling natural gas and (ii) fractionating and
transporting natural gas liquids; b) upstream, which includes acquiring, exploiting,
developing, and producing crude oil and natural gas interests; and c) minerals,
which includes acquiring and managing fee minerals and royalty interests. Its
corporate office is located in Houston, Texas.

MMP, based in The Woodlands, Texas, is in the natural gas gathering and processing
business. Its growing natural gas gathering business is located in three geographic
areas: East Texas, Central Texas, and West Texas. Overall, MMP has approximately
600 miles of pipelines in Texas, while MMP’s processing business is primarily
located in southern Louisiana. The acquisition of MMP and the addition of its
assets in these geographic areas will complement Eagle Rock’s already strong
presence in Texas and Louisiana and expands its operations to include processing
assets for Gulf of Mexico gas production.

About Thompson & Knight

Since 1887, Thompson & Knight LLP has consistently made a positive impact on its
clients’ successes. With its practice focused on the energy industry, the Firm has
extensive resources in litigation, tax, insolvency, and international energy
matters. The Firm has approximately 420 attorneys, and has offices and alliances in
North America, South America, Europe, and Africa. Thompson & Knight represents
companies, government entities, and individuals in local, regional, and national
markets around the world.

Web Site: http://www.tklaw.com

Contact Details: Becky S. Jackson
Chief Client Services Officer
Thompson & Knight LLP
One Arts Plaza
1722 Routh Street, Suite 1500
Dallas, Texas 75201
214.969.1478
becky.jackson@tklaw.com