Smart Glycerin owns biodiesel production facilities in Adrian, MI; Keokuk, IA and Crawfordsville, IA. Our business started in ... 2011 with the purchase of these plants and their remodeling to encompass new technologies and production techniques for biodiesel and glycerin processing. We employ over 40 personnel in our three plants, including process operators, maintenance technicians, laboratory technicians; and financial, administrative and management personnel. read more