All employees and visitors, or visiting officials, are required to undergo a security screening process. The security requirements, or the clearance required, will depend on the nature of the work to be undertaken. This will be assessed on an as-needed basis. All individuals, having access to the lab, will undergo a security clearance.
Evidence of meeting #29 for Canada-China Relations in the 43rd Parliament, 2nd session. (The original version is on Parliament’s site, as are the minutes.) The winning word was documents.
A video is available from Parliament.