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

27.  Supacite briquettes, manufactured by Maxibrite Limited at Llantrisant, Mid Glamorgan, which—

(a)comprise anthracite (as to approximately 95 per cent. of the total weight), and starch and catalyst as binder (as to the remaining weight);

(b)were manufactured from those constituents by a process involving roll-pressing and heat treatment at about 240°C;

(c)are unmarked ovoids and have an average weight of 45 grammes; and

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