After section 71—
insert—
'(1) An objection to an application for a mining claim may be withdrawn by the objector giving written notice of the withdrawal to—
(a) the mining registrar; and
(b) if the objection has been referred to the Land Court under section 72—
(i) the Land Court; and
(ii) the applicant.
'(2) A withdrawal of an objection can not be revoked.'.