A framed, 79 cm by 104 cm, photograph of the prototype SLOWPOKE 1 reactor in Bldg. 145 at Chalk River in May of 1970, just prior to testing in the Pool Type Reactor (PTR) reactor pool. The schematic of an installed unit, shown in the lower left corner of the frame is reproduced in the right-hand panel along with a second similar schematic below. The two persons at the very left of the photograph are, respectively, P. Stephens-Guille and S. Gowans. They were the engineers intimately tied to the mechanical design of the reactor assembly. This photo was one of several that were displayed for many years in the foyer of Bldg. 145.
