SCHEDULE 1Authorised fuels
44
Supabrite Coke Doubles, manufactured by HJ Banks and Company Limited at Inkerman Road Depot, Tow Law, County Durham, which—
a
comprise metallurgical coke (as to approximately 40 to 60% of the total weight) and petroleum coke (as to the remaining weight);
b
were manufactured from those constituents by a process involving blending and screening;
c
are unmarked random shapes; and
d
have a sulphur content not exceeding 1.95% of the total weight.