A set of four identification cards used by Ron Cecil, an Ontario Hydro and later AECL employee at Chalk River, to allow access to various sites during CANDU reactor commissioning. One, which is double-sided, was used during the commissioning of the CANDU-600 at EMBALSE, Argentina. Another was used at Pt. Lepreau. It is not known if the GE Canada card refers to the operations at the Nuclear Power Demonstration (NPD) reactor or not. No information is known about the DANYL access card.