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This photograph depicts Marshall Space Flight Center employees, James Reagin, machinist (top); Floyd McGinnis, machinist; and Ernest Davis, experimental test mechanic (foreground), working on a mock up of the S-IC thrust structure. The S-IC stage is the first stage, or booster, of the 364-foot long Saturn V rocket that ultimately took astronauts to the Moon. The S-IC stage, burned over 15 tons of propellant per second during its 2.5 minutes of operation to take the vehicle to a height of about 36 miles and to a speed of about 6,000 miles per hour. The stage was 138 feet long and 33 feet in di…
