Twin Cities Army Ammunition Plant
The Twin Cities Army Ammunition Plant is an inactive United States Army ammunition plant located in Ramsey County, Minnesota in the suburbs of Arden Hills and New Brighton, bounded by County Road I to the north, I-35W to the west, U.S. Route 10 to the southwest, County Highway 96 to the south, and Lexington Avenue to the east. The site has 255 buildings across 2,382 acres (9.64 km2). The site was added to the National Priorities List as a Superfund site on September 8, 1983. The soil, sediments, groundwater, and surface water surrounding the plant were contaminated with base neutral acids, metals, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, volatile organic compounds, pesticides, cyanide, and explosives.
Initially, the plant was known as the Twin Cities Ordnance Plant but it was renamed the Twin Cities Arsenal in 1946 and finally, in 1963, the Twin Cities Army Ammunition Plant.
The TCAAP was a product of the government-owned, contractor-operated (GOCO) war materials production program established by the War Department during World War II. The Minneapolis-Saint Paul area emerged as a potential GOCO candidate primarily on the basis of labor supply. TCAAP was one of six GOCO plants built to produce small arms ammunition during World War II, and was operated by the Federal Cartridge Corporation under contract to the War Department.
Construction of the plant began in August 1941 and was completed with three main munitions facilities. Each main facility had five lines of production and the entire plant had a total of 35 lines.
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