Superconducting Super Collider cancellation (1993)
Congress approved a $4.4 billion particle accelerator in Texas. Costs ballooned past $12 billion, and in 1993 the House voted to kill the project after contractors had already excavated 14 miles of tunnels.
Thousands of physicists lost work, and massive tunnels were left vacant underground.
The U.S. ceded leadership in high-energy physics to Europe, which built the Large Hadron Collider.
TMT depends on federal funding through the NSF, making it vulnerable to the same funding calculus that killed the Superconducting Super Collider.
