They are not even loaded into those underground silos.

This lies at the heart of the matter, since satellites and other technology can be fairly easily evaded by, for example, underground silos.

There was no one at the opening of the underground silo.

After the concrete came the skilled technicians who completed the wiring for the giant underground silo.

It was thought to be deployed in limited numbers in underground silos beginning in 1980.

Huge mounds, which were underground silos to house the horrid beasts.

Worse yet, we think there are other underground silos we don't know about.

They were stored (to be launched from) hardened underground silos.

The missile can be based in underground silos or in railroad cars that change position constantly.

The missile was launched from an underground silo, and radio command guided.