DeWitt Refinery Opens Door to Winter Crop by Arkansas Business Staff Posted 10/14/2013 12:00 am Updated 6 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 articles older than 15 days. Articles newer than 15 days are not included in this offer. Purchase Now Already have archive access? Login to view this article.