Regulation 1 Citation and commencementI1 Northern Ireland These Regulations may be cited as the Construction (Use of Explosives) Regulations (Northern Ireland) 1997 and shall come into operation on 12th February 1998. Annotations Commencement I1 Reg. 1 in operation at 12.2.1998, see reg. 1 ← Introduction Regulation 1 Regulation 2 →