The Smoke Control Areas (Authorised Fuels) Regulations (Northern Ireland) 1999

3.  Ancit briquettes manufactured by CPL Industries Limited at Immingham, North East Lincolnshire, which—

(a) comprise anthracite (as to approximately 60 per cent. to 85 per cent. of the total weight), petroleum coke (up to approximately 30 per cent. of the total weight) bituminous coal (up to approximately 15 per cent. of the total weight) and a molasses and phosphoric acid binder (as to the remaining weight);

(b) were manufactured from those constituents by a process involving roll pressing and heat treatment at about 300°C;

(c) are unmarked cushion-shaped briquettes with an average weight of 48 grammes; and

(d) have a sulphur content not exceeding 1£5 per cent. of the total weight.