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IB Daiwa
is a Japanese multi-national business conglomerate with headquarters in Tokyo. Daiwa's primary interests are in the resources and energy business in the United States and Australia; and the company is also involved in the food business.〔( IB Daiwa, group structure )〕
==History==
Daiwa was started in 1947 as a manufacturer of industrial use machine sewing thread and twisted yarns.〔(IB Daiwa, history )〕 The company subsequently diversified.〔( IB Daiwa, corporate data )〕
Following the 2011 Tohoku earthquake and tsunami, the series of Fukushima I nuclear accidents included the discovery of a roughly 20 cm crack in a concrete-lined basin behind the No. 2 reactor's turbine building. Daiwa provided a water-gel polymer mix which was introduced into the basin in an attempt to plug the leak;〔( "Chemical, sawdust, newspaper mix used to plug leak at nuclear plant," ) ''Baltimore Sun'' (US). April 3, 2011, citing ( CNN ), retrieved 2011-04-11.〕 but the attempt was initially unsuccessful.〔( "Radioactive water continues to leak," ) NHK World. April 3, 2011.〕 In due course, the Tokyo Electric Power Company (TEPCO) announced that an injection of of polymer coagulant into the pit did mitigate the leaking;〔( "Out flow of fluid containing radioactive materials to the ocean from areas near intake channel of Fukushima Daiichi Nuclear Power Station Unit 2," ) TEPCO Press Release. 6 April 2011, retrieved 2011-04-08.〕 however, the International Atomic Energy Agency (IAEA) and others credit additional factors as well.〔("IAEA Update (6 April 2011, 8:15 UTC)," ) retrieved 2011-04-08; ("Fukushima leak plugged; nitrogen approved," ) ''World Nuclear News'' (UK). 6 April 2011, retrieved 2011-04-08.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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