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Published September 04, 2013, 12:00 AM

Clayton McNeff


SarTec/EverCat Fuels' Clayton McNeff shows how a portable biodiesel production unit works, August 2, 2013, in Isanti, Minnesota. The company plans to take it to farms, agricultural businesses and co-ops to process natural oil wastes, soybean oil and other lipids into biodiesel. (Elizabeth Flores/Minneapolis Star Tribune/MCT)