Section 20: replaced, on 24 May 2013, by section 18 of the Crown Minerals Amendment Act 2013 (2013 No 14).
Section 20: amended, on 28 October 2021, by section 3 of the Secondary Legislation Act 2021 (2021 No 7).
Section 20(a): repealed, on 28 October 2021, by section 3 of the Secondary Legislation Act 2021 (2021 No 7).
Section 20(b): repealed, on 28 October 2021, by section 3 of the Secondary Legislation Act 2021 (2021 No 7).
Section 20(c): repealed, on 28 October 2021, by section 3 of the Secondary Legislation Act 2021 (2021 No 7).
Section 20(d): repealed, on 28 October 2021, by section 3 of the Secondary Legislation Act 2021 (2021 No 7).