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The Twin Cities Army Ammunition Plant is an inactive United States Army ammunition plant located in the City of Arden Hills in Ramsey County, Minnesota. The 427-acre site is 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 was added to the National Priorities List as a Superfund site on September 8, 1983.〔(【引用サイトリンク】title=Twin Cities Army Ammunition Plant Superfund site progress profile )〕 The soil surrounding the plant was contaminated with base neutral acids, metals, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, volatile organic compounds, pesticides, cyanide, and explosives.〔(【引用サイトリンク】title=Twin Cities Army Ammunition Plant site description )〕 The site originally had 255 buildings across .〔(【引用サイトリンク】title=Twin Cities Army Ammunition Plant site description )〕 Ramsey County purchased a 427-acre parcel of the TCAAP site from the U.S. government in April 2013〔〔(【引用サイトリンク】 publisher =Pioneer Press )〕 and is developing it as Rice Creek Commons. Demolition and environmental cleanup to meet residential standards was completed in November 2015. According to Ramsey County, crews removed and appropriately disposed of 100,000 tons of contaminated soil. Additionally, crews removed and recycled more than 400,000 tons of concrete and asphalt – equivalent to the weight of four average passenger cruise ships. More than 90% of the materials removed from the site were recycled or reused in new roadways at the site and other areas of the Twin Cities. Private development is scheduled to begin in 2016 and will include a mix of residential, commercial, light industrial and other uses. ==History== Initially, the plant was known as the Twin Cities Ordnance Plant. It was renamed the Twin Cities Arsenal in 1946 and finally, in 1963, the Twin Cities Army Ammunition Plant (TCAAP).〔http://www.mnhs.org/library/findaids/00684.xml〕 TCAAP was built as part 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.〔http://www.presspubs.com/shoreview/news/article_977d6f20-a66c-50b9-b7f7-db4825b5a95c.html〕 Construction of the plant began in August 1941. Each of the three main munitions facilities had five production lines, and the entire plant had a total of 35 lines. The workforce reached its peak in July 1943 when employment totaled about 26,000 people, more than half of whom were women. The plant produced .30, .50 and .45 caliber ammunition. Production of small arms ammunition began on March 9, 1942, and the plant remained in production for 42 months. Between 1942 and 1945, TCAAP produced all five main small arms types: ball, armor piercing, tracer, incendiary and blanks. In 1944, the plant opened an important small arms ammunition reclamation center. The design of the .30 and .50 caliber cartridge-disassembly machines by TCAAP personnel in the late 1940s represented a significant technological advance in small arms salvage technology. Development in ammunition salvage began during World War II and continued at the facility during the Cold War period. After Victory over Japan Day, TCAAP was placed in reserve status. The facility was operated by the US Army from 1946 to 1950, when the installation was brought back into production to manufacture small arms and artillery ammunition for the Korean War. The plant remained in service until 1957, when it was again closed. In 1965, during the Vietnam War, the plant was re-opened to manufacture new types of small arms ammunition. It was on standby status from 1976 through 2002. In 2002, more than were declared "in excess" by the United States Army, though Alliant Techsystems continued to manufacture munitions there as recently as 2005. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Twin Cities Army Ammunition Plant」の詳細全文を読む スポンサード リンク
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