The Clean Air (Emission of Dark Smoke) (Exemption) Regulations (Northern Ireland) 1981
Made 18th March 1981. Coming into operation 13th April 1981.
The Department of the Environment, in exercise of the powers conferred on it by section 2(3) of the Clean Air Act (Northern Ireland) 1964(a) and the powers conferred by section 42(2) of that Act and now vested in it(b) and of every other power enabling it in that behalf, hereby makes the following regulations:-