A person acting pursuant to the first paragraph may(a) audit or examine the registers, books, accounts, vouchers, letters, telegrams or other documents, and the property, apparatus, equipment, processes or material the audit or examination of which may, in his opinion, help him in determining if this Act, the regulations and the rules are being complied with;
(b) compel a person found on the premises to give him reasonable assistance in his audit or examination and, for that purpose, to accompany him on the premises;
(c) if, during an audit or examination, he believes, on reasonable grounds, that an offence against this Act, the regulations or the rules has been or is about to be committed, seize and remove anything mentioned in paragraph a that may be used as evidence of the commission of that offence and, where required, immediately put an end, on the conditions he fixes, to the activity with which that offence is connected.