DeWitt Refinery Opens Door to Winter Crop by Arkansas Business Staff Posted 10/14/2013 12:00 am Updated 3 years ago A $27,000, refrigerator-sized gadget in DeWitt converts camelina, a wheat-like crop, into bio-fuel. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 15 days. Purchase Now Already have archive access? Login to view this article.