An apparently genuine document purporting—
(a) to
be under the common seal of Maralinga Tjarutja; and
(b) to
be signed by four or more members of the Council; and
(c) to
certify that a specified act of the Council has been done in conformity with
the provisions of this Act,
shall be conclusive proof that that act is valid and binding upon Maralinga
Tjarutja.