90. Penalty for obstructing Board in performance of its duty

Any person who at any time hinders, obstructs or molests any of the Board’s employees, agents or contractors in the performance and execution of their duty or of anything which they are respectively empowered or required to do by virtue or in consequence of this Act, or removes any mark set up for the purpose of indicating any level or direction necessary to the execution of works authorised by this Act, shall be guilty of an offence and shall be liable on conviction to a fine not exceeding $5,000 or to imprisonment for a term not exceeding 6 months or to both.