Paragraph 14
Dragonbrite briquettes, manufactured by Tower Colliery Limited at Aberdare, Rhondda Cynon Taff which—
(a)
comprise tower duff (as to approximately 95 per cent 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 and have an average weight of 50 grammes; and
(d)
have a sulphur content not exceeding 1 per cent of the total weight.