Polonium initiator was classified until the 1960s. The Atomic Energy Commission and the Manhattan Project funded human experiments using polonium on five people at the University of Rochester between 1943 and 1947. The people were administered between of polonium to study its excretion. Polonium is a very rare element in nature because of the short half-life of all its isotopes. Po, Po, and Po appear in the decay chain of U; thus polonium can be found in uranium ores at about 0.1 mg per metric ton (1 part in 10), which is approximately 0.2% of the abundance of radium. The amounts
Discover Financial the Diners Club International network from Citigroup for $165 million. In May 2008, the Federal Trade Commission approved the transaction and it finalized on July 1, 2008. Discover stated that the Diners Club network, which is a major network outside the United States, will be merged with the Discover Network, a major network in the United States, creating an international network for Discover and Diners Club cardholders. Diners Club cards will continue to be issued by Diners Club International licensees. At this time, Discover Bank has no plans on issuing Diners Club branded cards itself. On September 17, 2010, Discover