(1) A document appearing to be a copy of an instrument of authorisation of an inspector, approval, agreement or permit issued, granted or made under this Act if accompanied by a certificate appearing to be signed by the Secretary to the effect that it is a copy is evidence and, in the absence of evidence to the contrary, is proof of the existence and contents of the original.
(2) A certificate appearing to be signed by the Secretary to the effect that, on a date specified in the certificate, a person held or did not hold an authority under this Act specified in the certificate is evidence and, in the absence of evidence to the contrary, is proof of the matters stated in the certificate.