For section 53 (2) of the Act , a blasting explosive used by either of the following persons is prescribed—
(a) a person who is appointed as a shotfirer by—(i) for an underground mine—the underground mine manager of the mine; or(ii) for another mine, including a quarry—the site senior executive for the mine;
(b) a person who is in the presence, and under the direct supervision, of a prescribed shotfirer.