http://www.foxnews.com/scitech/2011/09/30/us-atom-smasher-tevatron-accelerates-its-last-particle/
"Helen Edwards, the lead scientist for the construction of the Tevatron in the 1980s, terminated the final store in the Tevatron by pressing a button that activated a set of magnets that steer the beam into the metal target. Edwards then pushed a second button to power off the magnets that have been guiding beams through the Tevatron ring for 28 years." <more>
