The local factory (officially known as "Crystal City Works Nine") continued to be a vitally-important glassmaking center through much of the 20th century, producing important components for American military aircraft during [[World War II]]. Beginning in 1965, it switched to the production of "float glass," which maintained its operations for another generation; in 1990, however, the factory was finally shut down and much of its equipment salvaged. Relatively few of its facilities are still in existence today. In recent years, there has been some discussion of building an iron-ore smelter on the site, but concerns of environmental pollution have aroused controversy on the subject. | The local factory (officially known as "Crystal City Works Nine") continued to be a vitally-important glassmaking center through much of the 20th century, producing important components for American military aircraft during [[World War II]]. Beginning in 1965, it switched to the production of "float glass," which maintained its operations for another generation; in 1990, however, the factory was finally shut down and much of its equipment salvaged. Relatively few of its facilities are still in existence today. In recent years, there has been some discussion of building an iron-ore smelter on the site, but concerns of environmental pollution have aroused controversy on the subject. |