Working Missile Silo Facility -

A working missile silo facility is a high-security, subterranean military installation designed for the permanent storage and rapid launch of intercontinental ballistic missiles (ICBMs). These facilities are engineered to withstand extreme conditions, including nuclear blasts, and are kept on constant alert status. Structural Composition

: A vertical cylindrical shaft, typically extending 80 to 100 feet underground. It is constructed of reinforced concrete several feet thick and lined with steel plate to protect the missile from the elements and external shock. Working Missile Silo Facility

: A separate, manned surface residence that serves as the hub for a cluster of silos. A working missile silo facility is a high-security,

: A hardened underground capsule, often 60 to 100 feet deep, where a two-person "missileer" crew monitors a group of (usually ten) silos. including nuclear blasts