http://www.legislation.gov.uk/ukpga/Geo6/1-2/52/schedule/SIXTH/paragraph/3/enactedCoal Act 1938Mineral extraction, mining, quarryingKing's Printer of Acts of Parliament2020-11-20SCHEDULESSIXTH SCHEDULEAmendments of 20 & 21 Geo. 5. c. 34, s. 133Subsection (4) of the said section thirteen is hereby repealed.