Where Was Einsteinium First Discovered?

Einsteinium (Symbol: Es) was first discovered in 1952 by a team of scientists led by Albert Ghiorso at the University of California, Berkeley. The element was produced by bombarding a sample of plutonium-239 with neutrons in the "Materials Testing Reactor" at the Oak Ridge National Laboratory in Tennessee, USA. The discovery of einsteinium was kept secret for several years due to its potential military applications as a component in nuclear weapons.