The following sections of the CLC Part II state:
Specific duties of employer
...(e) make readily available to employees for examination, in printed or electronic form, a copy of the regulations made under this Part that apply to the work place;
135. (8) A work place committee, in respect of the work place for which it is established, may request from an employer any information that the committee considers necessary to identify existing or potential hazards with respect to materials, processes, equipment or activities.
135. (9) A work place committee, in respect of the work place for which it is established, shall have full access to all of the government and employer reports, studies and tests relating to the health and safety of the employees, or to the parts of those reports, studies and tests that relate to the health and safety of employees, but shall not have access to the medical records of any person except with the person’s consent.
A - As you can see, the WPHSC has a right to any information it requires to perform its duties. Therefore, if copies of anything including the items identified in the question are needed, the employer must ensure that the WPHSC gets them.