234   Cancellations

(1)  Before cancelling an opal prospecting licence on a ground referred to in section 233 (1) (b)–(d), the mining registrar:

(a)  must cause written notice of the proposed cancellation, and of the grounds of the proposed cancellation, to be served on the holder of the licence, and

(b)  must give the holder of the licence a reasonable opportunity to make representations with respect to the proposed cancellation, and

(c)  must take any such representations into consideration.

(2)  Cancellation of an opal prospecting licence takes effect on the date on which written notice of the cancellation is served on the holder of the licence or on such later date as is specified in the notice.

(3)  Cancellation of an opal prospecting licence does not affect any liability incurred by the holder of the licence before the cancellation took effect.