12. Bord na Móna Firepak briquettes (also marketed as Arigna Special coal briquettes), manufactured by Bord na Móna Fuels Limited, Newbridge, County Kildare, Ireland, which—
(a)comprise anthracite (as to approximately 50% of the total weight), petroleum coke (as to approximately 20 to 40% of the total weight), bituminous coal (as to approximately 10 to 30% of the total weight) and starch based binder (as to the remaining weight);
(b)were manufactured from those constituents by a process involving roll-pressing and heat treatment;
(c)are unmarked pillow-shaped briquettes;
(d)have an average weight of 50 grams; and
(e)have a sulphur content not exceeding 1.5% of the total weight.