Thanks to Wilson's talented leadership, a management style very much adopted from Lawrence, the facility was completed on time and under budget. According to Wilson, he gave Atomic Energy Commission chairman Glenn T. Seaborg his assurance "signed in blood" that he would not exceed the authorized $250 million budget and "would rot in Hell" if he did. The facility centered on a four-mile circumference, 400 GeV accelerator. Wilson subsequently initiated the design of the Tevatron, a 1 TeV particle accelerator. The National Accelerator Laboratory, was renamed the Fermi National Accelerator Laboratory in 1974, after Enrico Fermi. It is frequently referred to as "Fermilab".