10 Cosycoke (also marketed as Lionheart Crusader or Sunbrite Plus) manufactured by Monckton Coke & Chemical Company Limited at Royston, near Barnsley, South Yorkshire and Aimcor Supercoke (also marketed as Supercoke), manufactured by M & G Fuels Limited at Hartlepool Docks, Hartlepool, which in each case—
(a)comprise sized hard coke (as to approximately 45 to 65 per cent of the total weight) and sized petroleum coke (as to the remaining weight);
(b)were manufactured from those constituents by blending;
(c)are unmarked random shapes; and
(d)have a sulphur content not exceeding 2 per cent of the total weight.