Dynamic Fuels Supplies Renewable Jet Fuel for Commercial Flights

GEISMAR, La., June 23, 2011 (GLOBE NEWSWIRE) — Dynamic Fuels LLC will help make aviation history when KLM Royal Dutch Airlines begins commercial operations on fuel produced at Dynamic’s Geismar plant. In September, KLM will begin flying a series of more than 200 commercial flights between Amsterdam and Paris powered by renewable jet fuel.

These commercial flights follow rigorous renewable jet fuel testing and certification work conducted by the Air Force Research Laboratory, Rolls-Royce Group, and Cessna Aircraft Co., on fuel produced by Dynamic Fuels. “This relationship demonstrates continued success building Dynamic Fuels, and further illustrates the promise of advanced biofuels,” said Bob Ames, vice president of Renewable Energy for Tyson Foods.

“The production of ‘drop in’ renewable fuels which are a direct replacement for petroleum based fuels is a major milestone in the commercial deployment of advanced technologies,” said Jeff Bigger, senior vice president of Business Development for Syntroleum. The plant uses Syntroleum’s Bio-Synfining™ Technology to produce the renewable fuels from feedstocks produced or procured by Tyson Foods.

Dynamic Fuels is a 50/50 joint venture between Syntroleum Corp. (Nasdaq:SYNM) and Tyson Foods Inc. (NYSE:TSN). The company’s plant successfully converts fats, oils and greases into high quality renewable fuels. Unlike ethanol and biodiesel, which are typically produced from food ingredients such as corn and soybean oil, Dynamic Fuels uses non-food grade fats, oils and greases. Production began in October 2010.

The renewable jet fuel produced by Dynamic Fuels will be delivered to KLM by SkyNRG, a consortium comprised of KLM, North Sea Group and Spring Associates.

To see video of operations at Dynamic Fuels, click on the following link: http://ping.fm/lnEUV

Photos of the facility can be seen by clicking:
http://ping.fm/1tmWl

About Syntroleum

Syntroleum Corporation (Nasdaq:SYNM) owns the Syntroleum® Process for Fischer-Tropsch (FT) conversion of synthesis gas derived from biomass, coal, natural gas and other carbon-based feedstocks into liquid hydrocarbons, the Synfining® Process for upgrading FT liquid hydrocarbons into middle distillate products such as synthetic diesel and jet fuels, and the Bio-Synfining™ technology for converting animal fat and vegetable oil feedstocks into middle distillate products such as renewable diesel and jet fuel using inedible fats and greases as feedstock. The 50/50 venture — known as Dynamic Fuels — was formed to construct and operate multiple renewable synthetic fuels facilities, with production on the first site beginning in 2010. The Company plans to use its portfolio of technologies to develop and participate in synthetic and renewable fuel projects. For additional information, visit the Company’s web site at www.syntroleum.com

About Tyson Foods

Tyson Foods, Inc. (NYSE:TSN), founded in 1935 with headquarters in Springdale, Arkansas, is one of the world’s largest processors and marketers 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 services to customers throughout the United States and more than 90 countries. The company has approximately 115,000 Team Members employed at more than 400 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.

CONTACT: Worth Sparkman
         Tyson Foods, Inc.
         479-290-6358
         worth.sparkman@tyson.com

         Amanda Burns
         Syntroleum Corporation
         918-764-3480
         or
         mburns@syntroleum.com

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