Idaho State University has been fined after it lost track of a small amount of plutonium 239, a substance used to make nuclear weapons.
원문출처 : https://www.cnn.com/2018/05/07/us/university-lost-plutonium-trnd/index.html
원문출처 : https://www.cnn.com/2018/05/07/us/university-lost-plutonium-trnd/index.html