SCHEDULEAuthorised fuels

21.

Dragonbrite briquettes, manufactured by Tower Colliery Limited at Aberdare, Mid Glamorgan, South Wales, which—

(a)

comprise tower duff (as to approximately 95% of the total weight) and a resin based binder (as to the remaining weight);

(b)

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

(c)

are pillow-shaped briquettes marked with the letter “T” on one side;

(d)

have an average weight of 50 grams per briquette; and

(e)

have a sulphur content not exceeding 1% of the total weight.