The Keystone Drops Into Place: St. Louis Tops Out the Gateway Arch
On October 28, 1965, workers eased a 10-ton keystone into the top of the Gateway Arch as heat, math, and 630 feet of stainless steel held their breath.
On October 28, 1965, workers eased a 10-ton keystone into the top of the Gateway Arch as heat, math, and 630 feet of stainless steel held their breath.