A Launch Control Facility under construction near Malmstrom AFB, Mont. Cold War requirements to build up U.S. nuclear defenses speeded up Minuteman site construction. Builders often labored year-round in three shifts, seven days a week. The Army Corps of Engineers Ballistic Missile Construction Office and its contractors built 1,000 silos between 1961 and 1966. (U.S. Air Force photo)
U.S. Air Force photo
<p><a rel="nofollow" class="external free" href="http://www.edwards.af.mil/shared/media/photodb/photos/090108-F-1234P-014.jpg">http://www.edwards.af.mil/shared/media/photodb/photos/090108-F-1234P-014.jpg</a>
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<ul><li>Gallery: <a rel="nofollow" class="external free" href="http://www.edwards.af.mil/photos/mediagallery.asp?galleryID=528&amp;page=74">http://www.edwards.af.mil/photos/mediagallery.asp?galleryID=528&amp;page=74</a></li></ul>