SCHEDULEAUTHORISED FUELS

35

Sovereign briquettes, manufactured by Monckton Coke & Chemical Company Limited at Royston, near Barnsley, South Yorkshire which—

a

comprise anthracite (as to approximately 75 per cent of the total weight), coal and reactive coke (as to approximately 21 per cent of the total weight) and cold-setting resin binder (as to the remaining weight);

b

were manufactured from those constituents by a process involving extrusion;

c

are unmarked hexagonal briquettes and have an average weight of 130 grammes; and

d

have a sulphur content not exceeding 2 per cent of the total weight.