Paragraph 8
Briteflame briquettes, manufactured by Maxibrite Limited at Mwyndy Industrial Estate, Llantrisant, Rhondda Cynon Taff, which—
(a)
comprise bituminous coal (as to approximately 10 to 15 per cent of the total weight), petroleum coke (as to approximately 10 to 15 per cent of the total weight), anthracite duff (as to approximately 70 to 80 per cent of the total weight), and starch binder (as to the remaining weight);
(b)
were manufactured from those constituents by a process involving roll-pressing and heat treatment at about 260o C;
(c)
are unmarked pillow-shaped briquettes and have an average weight of 140 grammes; and
(d)
have a sulphur content not exceeding 1.9 per cent sulphur on a dry basis.