Section 234(1): amended, on 1 April 1988, by section 78(1) of the Public Works Amendment Act 1988 (1988 No 43).
Section 234(3): amended, on 1 April 1988, by section 78(2)(a) of the Public Works Amendment Act 1988 (1988 No 43).
Section 234(3): amended, on 1 April 1988, by section 78(2)(b) of the Public Works Amendment Act 1988 (1988 No 43).
Section 234(4): amended, on 1 April 1988, by section 78(3) of the Public Works Amendment Act 1988 (1988 No 43).