SCHEDULEAuthorised fuels

I150

Supertherm briquettes, manufactured by Coal Products Limited at Immingham Briquetting Works, Immingham, North East Lincolnshire, which—

a

comprise a blend (in the proportion of 19:1 by weight) of anthracite and medium volatile coal (as to approximately 93% of the total weight), and cold-setting organic binder or a molasses and phosphoric acid binder (as to the remaining weight);

b

were manufactured from those constituents by a process involving roll-pressing;

c

are unmarked ovoids;

d

have an average weight of 160g per briquette; and

e

have a sulphur content not exceeding 1.5% of the total weight.