A person who wilfully and unlawfully ¾

(a) interferes with, alters, takes, injures, or destroys, testing work or part of it commits an offence.

Penalty: $40 for a first offence; and $200 for a subsequent offence;

(b) obstructs an authorised person or his assistants in doing anything which he is authorised under this Part to do commits an offence.

Penalty: $100.

[Section 83B inserted by No. 48 of 1953 s. 6; amended by No. 41 of 1966 s. 12.]