SCHEDULEAuthorised Fuels
57
Maxibrite briquettes, manufactured by Maxibrite Limited at Mwyndy Industrial Estate, Llantrisant, Rhondda Cynon Taf, which—
a
comprise anthracite fines (as to approximately 84% of the total weight), petroleum coke (as to approximately 12% of the total weight) and starch as binder (as to the remaining weight);
b
were manufactured from those constituents by a process involving roll-pressing and heat treatment at 250°C;
c
are cushion-shaped briquettes marked with the letter “M”;
d
have an average weight of 35 grams; and
e
have a sulphur content not exceeding 2% of the total weight.