This cache is located outside a Titan 1 Missile Silo complex that held 3 Titan intercontinental ballistic missile. Titan I was a two-stage, liquid-fueled missile. The first stage delivered 300,000 pounds (1,330 kN) of thrust, the second stage 80,000 pounds. The Titan I had an effective range of 5,500 nautical miles. The warhead of the Titan I was an AVCO Mk 4 re-entry vehicle containing a W38 thermonuclear bomb with a yield of 3.75 megatons which was fuzed for either air burst or contact burst.
This is 1 of 3 ICBM silo that were located around Larson Air Force base in Moses Lake and became active on 1 April 1961, as the 568th Strategic Missile Squadron (ICBM-Titan) went on alert status as a Strategic Air Command (SAC) ICBM squadron, being equipped with the first-generation SM-68 Titan I with a mission of nuclear deterrence. The squadron was inactivated as part of the phaseout of the Titan I ICBM on 25 March 1965.
