SCHEDULEAuthorised fuels
26
Extracite briquettes, manufactured by Sophia-Jacoba Handelsgesellschaft mbH at Hückelhoven, Germany, which—
a
comprise anthracite duff (as to approximately 95.5% of the total weight) and ammonium lignosulphonate lye as binder (as to the remaining weight);
b
were manufactured from those constituents by a process involving roll-pressing and heat treatment at about 260°C;
c
are cushion-shaped briquettes with a silvery appearance and are marked with the letters “S” and “J”;
d
have an average weight of 40g per briquette; and
e
have a sulphur content of approximately 1.2% of the total weight.