America forgot how to make a classified nuclear warhead ingredient
The U.S. government forgot how to make a classified component of its own nuclear warheads, then spent $92 million figuring it out again. The material is called Fogbank, and almost everything about it is classified — its composition, its purpose, and how it’s manufactured.
Fogbank is used in the W76, W78, and W88 nuclear warheads. It’s believed to be an a…
