SCHEDULEAuthorised Fuels
44
Thermac briquettes, manufactured by Coal Products Limited at Immingham Briquetting Works, Immingham, North East Lincolnshire, which—
a
comprise anthracite (as to approximately 90% of the total weight) and cold-setting organic binder (as to the remaining weight);
b
were manufactured from those constituents by a process involving roll-pressing;
c
are unmarked pillow-shaped briquettes;
d
have an average weight of 48 grams per briquette; and
e
have a sulphur content not exceeding 1.5% of the total weight.