Josh Hamilton Dartmouth: The address for the Atomic Energy of Canada Ltd: Atomic Energy of Canada Ltd., AECL Research Chalk River Laboratories Chalk River, Ontario Canada. K0J 1J0. This is one site address. Perhaphs for the information you are after, the following company may be helpful: Theratronics International Inc. 413 March Road P.O.Box 13140 Kanata, Ontario Canada. K2K 2B7. Regards, J.Nunes.