Training for Underground Warfare at a Nuclear Weapons Complex in Texas

ADAM CLARK ESTES

In the early, angst-filled days of the Cold War, miners starting carving the insides out of a hill between Dallas and Austin, Texas. The workers didn't know what they were building, but—at 7,000 acres—it was huge. At that point in time, it was only known as "Project 76."

This secret underground base was the Army's only nuclear weapons storage facility called Killeen Base, and it remains an active training facility. After construction started in 1947, Army engineers carved tunnels out of the solid rock hillside; these became 20-foot-wide corridors with 30-foot-tall ceilings. It was all reinforced with concrete and sealed off with heavy steel doors. They even installed steel rails in various rooms to accomodate overhead cranes.

http://gizmodo.com/training-for-underground-warfare-at-a-nuclear-weapons-c-1524602108/+ace