Initial Construction Underway On Dynamic Fuels Plant

GEISMAR, La., Jan. 12, 2009 (GLOBE NEWSWIRE) -- Initial construction is underway
in Geismar, Louisiana, for the new plant being built by Dynamic Fuels, a joint
venture of Tyson Foods (NYSE:TSN) and Syntroleum Corporation (Nasdaq:SYNM),
company officials reported today.

Construction offices are now in place, and concrete foundations are being poured
for the new facility. The project remains on budget and on schedule for startup
in early 2010. Once in operation, the new facility will use Syntroleum's
Bio-Synfining(tm) Technology to convert animal fats and greases provided by
Tyson into ultra-clean renewable diesel and jet fuel.

"There has been great progress in the last 18 months since the formation of
Dynamic Fuels, as we have gone from concept to actually pouring concrete for the
first renewable synthetic fuels plant in the United States," said Jeff Bigger,
senior vice president of business development for Syntroleum. "With the support
of the State of Louisiana, outstanding effort and teamwork from the people
working day to day on the project and the support of both Tyson Foods and
Syntroleum we have been able to maintain our original project budget, economics
and schedule for the Geismar facility."

Jeff Webster, group vice president of Tyson's Renewable Products Division, said,
"We're pleased with the progress made on this important renewable fuels project.
Tyson is committed to revolutionizing the conversion of raw materials and
by-products into high-margin initiatives, and the Dynamic Fuels venture is a
cornerstone of this corporate strategy."

Since the formation of Dynamic Fuels in June 2007, the following milestones have
been achieved:

November 15, 2007 Geismar site selected
February 28, 2008 Awarded Front End Engineering Design to
CDI Engineering
March 19, 2008 Applied to Louisiana State Bond Commission
for GO Zone Bonds
June 16, 2008 Applied for Air Permit from Louisiana
Department of Environmental Quality
June 19, 2008 Bond Commission approved issuance of $100
million of GO Zone Bonds
July 11, 2008 Final investment decision approved by Tyson
Foods and Syntroleum
August 21, 2008 Awarded construction contract to L-Con
Constructors of Houston
September 9, 2008 Received Air Permit from Louisiana Department
of Environmental Quality
October 6, 2008 Groundbreaking ceremony with Louisiana
Governor Bobby Jindal
October 21, 2008 Issued $100 million in GO Zone Bonds
November 3, 2008 Began installing construction offices on site
December 15, 2008 Poured first concrete foundations
The project is scheduled for mechanical completion by year-end 2009, followed by
commissioning, start-up and ramp-up to full rate operations by mid-year 2010.

Due to the long lead times required to build some of the process equipment, the
company began the bidding process for this equipment in November 2007. To date,
Dynamic Fuels has ordered 36 long lead equipment items, including three
reactors, seven storage tanks, 14 heat exchangers, three separators, three pump
packages, one membrane unit, two compressor packages and two tank mixers. These
items are scheduled for delivery in the 2nd and 3rd quarter of 2009.

The facility cost estimate is $138 million. The project is being funded by cash
investments from Tyson Foods and Syntroleum, plus the GO Zone bond proceeds. To
date, Tyson and Syntroleum have invested a total of $28 million ($14 million
each). The GO Zone Bond proceeds were approximately $100 million. Tyson and
Syntroleum agreed a projected December 30, 2008 cash investment was not needed
and that future investments would be made as the cash is needed to meet project
expenses.

Staffing with permanent plant personnel is expected to start mid-year 2009 as
construction progresses and plant start-up approaches.

Updates on the project and its progress will be occasionally posted on the
Dynamic Fuels website, www.dynamicfuelsllc.com.

(A photo of the construction site is available upon request. Please e-mail
gary.mickelson@tyson.com for assistance).

About Tyson Foods, Inc. (NYSE:TSN)

Tyson Foods, Inc., founded in 1935 with headquarters in Springdale, Arkansas, is
the world's largest processor and marketer of chicken, beef and pork, the
second-largest food production company in the Fortune 500 and a member of the
S&P 500. The company produces a wide variety of protein-based and prepared food
products and is the recognized market leader in the retail and foodservice
markets it serves. Tyson provides products and service to customers throughout
the United States and more than 90 countries. The company has approximately
107,000 Team Members employed at more than 300 facilities and offices in the
United States and around the world. Through its Core Values, Code of Conduct and
Team Member Bill of Rights, Tyson strives to operate with integrity and trust
and is committed to creating value for its shareholders, customers and Team
Members. The company also strives to be faith-friendly, provide a safe work
environment and serve as stewards of the animals, land and environment entrusted
to it.

The Tyson Foods, Inc. logo is available at
http://www.globenewswire.com/newsroom/prs/?pkgid=3224

About Syntroleum (Nasdaq:SYNM)

Syntroleum Corporation owns the Syntroleum(r) Process for converting synthesis
gas derived from biomass, coal, natural gas and other carbon-based feedstocks,
and the Bio-Synfining(tm) technology for converting animal fat and vegetable oil
feedstocks into synthetic liquid hydrocarbons. The Company plans to use its
technology to develop and participate in synthetic and renewable fuel projects
utilizing the Company's technology in a number of global locations.

Forward Looking Statements

This document includes forward-looking statements as well as historical
information. These forward-looking statements may include statements relating to
costs, timing and production of the fuel plant; job creation from plant; and
fuel characteristics, benefits and uses. Forward-looking statements are by
nature estimates and actual results may differ.

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CONTACT: Tyson Foods, Inc.
Gary Mickelson
479-290-6111

Syntroleum Corporation
Ron Stinebaugh
918-764-3406