9. The Minister may revoke the appointment of any member of the Board —
(a)
if the conduct of the member, whether in connection with the duties of the appointment or otherwise, is in the opinion of the Minister such as to bring discredit upon the Board;
(b)
if for any reason the member becomes unable properly to carry out the duties of his appointment;
(c)
if, without due cause to be approved by the Chairman, the member absents himself from 3 successive meetings of the Board; or
(d)
if the Minister considers it desirable in the public interest to revoke the appointment.