Sorry, I don't have a scanner but there's a photo on page 7 of Secret Gadgets and Strange Gizmos by Bill Yenne that shows an ion engine. The caption reads: "The three technicians shown here in protective clothing have just emerged from cleaning in the residual toxic mercury atmosphere within the seventy-foot [more like twelve foot] structure seen in the center. The toxic mercury remained after ion-engine testing. The photograph was taken in the 1960s at the Lewis Research Center's Electric Propulsion Laboratory (since renamed the John H. Glenn Reseach Center) in Cleveland, Ohio. NASA
So, what happened to this saucer shaped device?
Thanks in advance,
Ed
So, what happened to this saucer shaped device?
Thanks in advance,
Ed