Space Power Facility Vacuum CHamber Entrance
Doorway leading into the Doorway leading into the Space Power Facility's vacuum chamber shortly before it began operations in late 1969. s vacuum chamber shortly before it began operations in late 1969.
Image Credit: NASA/MARTIN BROWN
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https://www.nasa.gov/image-detail/grc-1969-c-03158/
Image CreditNASA/MARTIN BROWN
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