A photo-etch plaque mounted on a wooden base and presented to C.A. Herriot on his retirement on 03 June 1983 honouring his service in three research reactors, namely NRX and NRU and the Taiwan Research Reactor (TRR) where he worked 1971-1973 on attachment from AECL. After serving in the operation and leadership of NRU, Al Herriot went on to lead the Maintenance and Construction Division at Chalk River until his retirement. The square, wooden, plaque measures 28 cm on a side.