comprise cushed anthracite (as to approximately 73% of the total weight), bituminous coal (as to approximately 18% of the total weight) and a molasses and orthophosphoric acid binder (as to the remaining weight);

were manufactured from those constituents by a process involving roll pressing followed by heat treatment at a temperature of approximately 250-280^oC;

are almost round pillow-shaped briquettes that are 40mm in diameter and about 21mm thick at the centre of the briquette;

have an average weight of 23 g per briquette; and

have a sulphur content not exceeding 0.5% of the total weight.