http://www.legislation.gov.uk/apni/1969/6/section/12Mines Act (Northern Ireland) 1969An Act to make fresh provision with respect to the management and control of mines and for securing the safety, health and welfare of persons employed thereat; to regulate the employment thereat of women and of young persons and certain other persons under the age of twenty-one years; to enable certain tips to be regulated and to require the fencing of abandoned and disused mines; to amend the Quarries Act (Northern Ireland) 1927; and for purposes connected with the matters aforesaid.texttext/xmlenStatute Law Database2018-07-27Expert Participation2018-06-01 Mines Act (Northern Ireland) 1969Sch. 3 para. 9AJustice Act (Northern Ireland) 2016Sch. 2 para. 2s. 61(2)art. 2(c) PART II12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Ss. 1-20 repealed (1.2.2017) by The Mines Regulations (Northern Ireland) 2016 (S.R. 2016/427), reg. 1(2), Sch. 3