# The Smoke Control Areas (Authorised Fuels) (England) (No. 2) Regulations 2014, Paragraph 56

Extent: E+W+S

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.

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Source: https://www.legislation.gov.uk/uksi/2014/2366/schedule/paragraph/56 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuels-england-no-2-regulations-2014/schedule/paragraph-56
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.