19.—(1) The operator shall ensure that safety drills are held at regular intervals for persons at work at the quarry.
(2) Such safety drills shall be for the following purposes—
(a)to train the persons who work at the quarry in the appropriate actions to be taken in an emergency including, where appropriate, the correct use, handling or operation of emergency equipment; and
(b)to train and check the skills of such persons to whom specific duties involving the use, handling or operation of such equipment have been assigned in the event of an emergency.