Shaw Awarded Refinery Expansion Contract by Marathon Petroleum.

BATON ROUGE, La. -- The Shaw Group Inc. (NYSE: SGR) today announced that its Shaw Stone & Webster business unit has been awarded an engineering and procurement contract by Marathon Petroleum Company LLC, a subsidiary of Marathon Oil Corporation (NYSE: MRO), for a 70,000 barrels per day (bpd)

heavy gas oil hydrocracker unit and 47,000 bpd kerosene hydrotreater unit. The contract award is part of the Garyville Major Expansion (GME) Project at Marathon's Garyville, La. refinery. The expansion project is expected to increase refining capacity from 245,000 bpd to 425,000 bpd, providing the market with an additional 7.5 million gallons of clean transportation fuels daily. The value of Shaw's contract was not disclosed.

Shaw has worked at Marathon's Garyville refinery since 2003, performing engineering, procurement and construction (EPC) services for a distillate hydrotreater unit, gasoline desulphurization unit and coker naphta splitter unit, which helped conform the refinery to meet new clean-fuel standards.

J.M. Bernhard, Jr., Chairman, President and Chief Executive Officer of Shaw said, "This award reflects a successful and solid relationship Shaw and Marathon have built through the years, and we are pleased to continue that relationship by facilitating these plant improvements, essential enhancements needed to meet today's growing energy demands. Shaw's unique capability to provide integrated services and viable solutions for our customers has established us as significant force in the refining market."

The Shaw Group Inc. is a leading global provider of technology, engineering, procurement, construction, maintenance, fabrication, manufacturing, consulting, remediation, and facilities management services for government and private sector clients in the energy, chemical, environmental, infrastructure and emergency response markets. Headquartered in Baton Rouge, La., with nearly $5 billion in annual revenues, Shaw employs approximately 21,000 people at its offices and operations in North America, South America, Europe, the Middle East and the Asia-Pacific region. For further information, please visit Shaw's website at www.shawgrp.com.

The Private Securities Litigation Reform Act of 1995 provides a "safe harbor" for certain forward-looking statements. The statements contained herein that are not historical facts (including without limitation statements to the effect that the Company or its management "believes," "expects," "anticipates," "plans," or other similar expressions) and statements related to revenues, earnings, backlog, or other financial information or results are forward-looking statements based on the Company's current expectations and beliefs concerning future developments and their potential effects on the Company. There can be no assurance that future developments affecting the Company will be those anticipated by the Company. These forward-looking statements involve significant risks and uncertainties (some of which are beyond our control) and assumptions and are subject to change based upon various factors. Should one or more of such risks or uncertainties materialize, or should any of our assumptions prove incorrect, actual results may vary in material respects from those projected in the forward-looking statements. The Company undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. A description of some of the risks and uncertainties that could cause actual results to differ materially from such forward-looking statements can be found in the Company's reports and registration statements filed with the Securities and Exchange Commission, including its Form 10-K and Form 10-Q reports, and on the Company's web-site under the heading "Forward-Looking Statements". These documents are also available from the Securities and Exchange Commission or from the Investor Relations department of Shaw. For more information on the company and announcements it makes from time to time on a regional basis visit our web site at www.shawgrp.com.