Renewable Energy Group Buys Tyson Foods' Stake in Dynamic Fuels by Arkansas Business Staff Posted 5/21/2014 03:59 pm Updated 10 months ago Renewable Energy Group Inc. has reached an agreement with Tyson Foods Inc. of Springdale to acquire Tyson's 50 percent ownership of Dynamic Fuels LLC, the companies announced Wednesday. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 20 days. Purchase Now Already have archive access? Login to view this article.