Paragraph 20 I1

comprise anthracite duff (as to approximately 95.5 per cent of the total weight) and ammonium lignosulphonate lye as binder (as to the remaining weight);

were manufactured from those constituents by a process involving roll pressing and heat treatment at about 260°C;

are cushion shaped briquettes with a silvery appearance and are marked with the letters “S” and “J”;

have an average weight of 40 grammes per briquette; and

have a sulphur content of approximately 1.2 per cent of the total weight.