Excavation of North American Aerospace Defense Command (NORAD) combat operation center (COC) on Cheyenne Mountain in Colorado, United States. Cement bucket on hoist cable rises over mountain. Man instructs as it rises up. It lowers into an access shaft. Workmen dump it. View of North portal entrance with conveyor in place.
Excavation of North American Aerospace Defense Command (NORAD) combat operation center (COC) on Cheyenne Mountain in Colorado, United States. Workmen wire on master blasting switch box. Roof fencing operation. Men operate gunite machine. Materials being mixed. Men make cement forms and raise it to tunnel entrance. Workman smoothen out green cement over archway.
Excavation of North American Aerospace Defense Command (NORAD) combat operation center (COC) on Cheyenne Mountain in Colorado, United States. Pump crete machine and conveyor belt system outside the portal. Workmen work on wooden slabs. View of completed shaft. Bus leaves terminal.
North American Aerospace Defense Command (NORAD) combat operation center (COC) on Cheyenne Mountain in Colorado, United States. Sergeant seated at the NORAD satellite tracking center. He gets up and changes tape reels on a computer. He rotates the reels.
North American Aerospace Defense Command (NORAD) combat operation center (COC) on Cheyenne Mountain in Colorado, United States. Truck goes into tunnel entrance of NORAD COC.
North American Aerospace Defense Command (NORAD) combat operation center (COC) on Cheyenne Mountain, Colorado. Interior of the Space Defense Center. Lieutenant Colonel stands and talks at the computer console. Status board shows disposition of satellite debris in the background.
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