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Space History Photo: Technicians Wheel Large 'Thimble' Through Truck Door

space history, NASA, radiation research
This 1961 photo shows technicians moving a container with experiments for irradiation. (Image credit: NASA.)

In this historical photo from the U.S. space agency, technicians wheel a large "thimble" containing experiments for irradiation into the containment vessel through the truck door in 1961.

When the reactor was shut down and the protection of the containment barrier could be broken, this door was the only way large items of equipment and hardware could be taken in or out of the containment vessel, utilizing forklifts if necessary.

For more information browse the Plum Brook Facility Page.

Each weekday, looks back at the history of spaceflight through photos (archive).

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The National Aeronautics and Space Administration (NASA) is the U.S. government agency in charge of the civilian space program as well as aeronautics and aerospace research. Founded in 1958, NASA is a civilian space agency aimed at exploring the universe with space telescopes,  satellites, robotic spacecraft, astronauts and more. The space agency has 10 major centers based across the U.S. and launches robotic and crewed missions from the Kennedy Space Center in Cape Canaveral Florida. It's astronaut corps is based at the Johnson Space Center in Houston. To follow NASA's latest mission, follow the space agency on Twitter or any other social channel, of visit: