comprise crushed anthracite (as to approximately 65.3% per cent of the total weight), long-flame bituminous coal (as to approximately 25.7% per cent of the total weight) and molasses and orthophosphoric acid binder (as to the remaining weight);

are manufactured from those constituents by a process involving roll pressing followed by heat treatment at a temperature of approximately 250-280°C;

are almost round pillow shaped briquettes that are 70mm in diameter and about 41mm thick at the centre of the briquette;

have an average weight of 115 grams per briquette; and

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