Mines Act (Northern Ireland) 1969

11N.I.The holder of any such certificate as is mentioned in section 127 may, after notice of intention to make an application under subsection (1) of that section has been duly served on him, be required by the court dealing with a complaint or trying an indictment for an offence alleged to have been committed by him, or may be required by a tribunal making inquiry under that section, to deliver up his certificate to the court or, as the case may be, the tribunal at the hearing.