sentences:  The city soon became a producer in steel, lumber, aluminum, bromine, rubber-coated products and fuel cells for the military.The town's primary economic focus is heavy industrial, including Albemarle Corporation's Bromine Products Division (which has two facilities near town), Amfuel (which produces fuel cells for the military), and Sapa Group's extruded aluminum products facility.Also located in the area are several oil and brine drilling companies, many of which are locally owned, and timber companies, such as Deltic and Weyerhaeuser.