http://www.legislation.gov.uk/ukpga/1974/36/introductionMines (Working Facilities and Support) Act 1974An Act to amend the Mines (Working Facilities and Support) Act 1966.1979-07-31texttext/xmlenStatute Law Database2011-05-271991-02-01Mines (Working Facilities and Support) Act 19741974 c.36An Act to amend the Mines (Working Facilities and Support) Act 1966.[31st July 1974]