A cut-away model of the ZED-2 reactor given to Dave Walker, the long-time lead researcher on the reactor, on his retirement in 1980. The model also functioned as a digital clock. The square wooden base of the model measures 15 cm on a side while the “graphite” section stands 11 cm tall and is 10 cm in diameter. The ZED-2 reactor was located in Bldg. 145 at CRNL. It was a low power (typically 5-120 watts), tank-type reactor that first achieved criticality in 1960.
