091619 404a A second Siouxland area ethanol plant is shutting down. The first was Plymouth Energy in Merrill, and now Sioux Center-based Siouxland Energy, a farmer-owned cooperative, has also stopped operations. The closures at both Iowa ethanol plants are temporary. A written statement blames the Trump Administration’s waivers so ethanol doesn’t have to be blended in gasoline produced at what the board said were “many large oil refineries.” Governor Kim Reynolds says President Trump will