Coal silo failures continue to occur at U.S. power plants, ... In July 2016, a coal silo collapsed at an Indiana power plant. The root cause was identified as cracking of the cone-to-skirt weld.

U.S. Nuclear Missile Silos Need Modernizing, but Fixes Aren’t Coming Soon Delays in upgrading land-based nuclear weapons sites erode support for the project and present Pentagon with a soaring ...

By the 1970s, when the U.S. Navy deployed long-range submarine-launched ballistic missiles, the air force had placed 1,000 Minutemen in silos across seven states. As missile-guidance systems ...