(1) The Commissioner may cancel a permit for any reason specified in section 51 .(2) The Commissioner, if satisfied that there may be grounds for cancelling a permit, may suspend the permit for the period specified in the notice.(3) The Commissioner is to cancel or suspend a permit by serving on the holder of the permit a notice stating (a) that the permit is cancelled or suspended; and(b) the reasons for cancelling or suspending it.(4) The cancellation or suspension of a permit takes effect on the date on which it is served.