In Schedule 3 to the M1Mines and Quarries Act 1954, at the end of paragraph 1 (constitution of tribunals to inquire into whether a certificate of competency granted under that Act should be withdrawn or suspended) there shall be added the words“; but no person shall be appointed—

(a)

as the person, or one of the persons, constituting such a tribunal, or

(b)

as an assessor to assist any such tribunal,

after the day on which he attains the age of seventy years. ”