Electric propulsion test facility at NASA's Lewis Research Center (now Glenn Research Center), c. 1965. Full caption: "TANK 7 IN CELL 4A OF THE ELECTRIC PROPULSION RESEARCH BUILDING EPRB"
Fullsize image: https://diqn32j8nouaz.cloudfront.net...k_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...lsion_tank.jpg
Previously:
https://www.homemadetools.net/forum/...837#post179141
https://www.homemadetools.net/forum/...281#post177015
https://www.homemadetools.net/forum/...114#post176359
https://www.homemadetools.net/forum/...024#post176118
https://www.homemadetools.net/forum/...249#post176893
