Throwback Thursday to March 2006, when this photo was taken. Fermilab’s Duane Newhart sits inside a giant magnet, whose construction began in 1947. It was completed in 1951 at a cost of $2.5 million. Forged at Bethlehem Steel in Pittsburgh, Pennsylvania, and weighing 465,000 pounds, it was originally used in the University of Chicago Synchrocyclotron. Later it became the core of the Chicago Cyclotron. By 1970 the Chicago Cyclotron was obsolete. The magnet was shipped to Fermilab in 1971 and became the foundation of experiment E-98. In the 1980s the magnet was modified to be superconducting. In total the magnet was used on seven experiments at Fermilab, and it was retired in 1991. In 2006 the magnet was disassembled and moved to a remote storage facility at Fermilab. Learn more about the magnet in symmetry. Photo: Marty Murphy