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Paragraph 28

Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below:

Supertherm briquettes, manufactured by Coal Products Limited at Shildon, County Durham, which–

(a)

comprise a blend (in the proportion of 19:1) of anthracite and medium volatile coal (as to approximately 93 per cent 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 ovoids;

(d)

have an average weight of 160 grammes per briquette; and

(e)

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