The Propulsion Systems Laboratory (PSL) as it appeared in 2008
Walkway on the first floor of Propulsion Systems Laboratory (PSL) No. 1 and 2. The test chambers were on the floor above. (9/30/2008)
Image Credit: NASA/QUENTIN SCHWINN
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https://www.nasa.gov/image-detail/grc-2008-c-04104/
Image CreditNASA/QUENTIN SCHWINN
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