# The Smoke Control Areas (Authorised Fuels) (England) (No. 2) Regulations 2014, Paragraph 43

Extent: E+W+S

Maxibrite briquettes, manufactured by Maxibrite Limited at Llantrisant, Rhondda Cynon Taf, South Wales, which—
(a) comprise anthracite fines (as to approximately 84% of the total weight), petroleum coke (as to approximately 12% of the total weight) and starch as binder (as to the remaining weight);
(b) were manufactured from those constituents by a process involving roll-pressing and heat treatment at 250°C;
(c) are cushion-shaped briquettes marked with the letter “M”;
(d) have an average weight of 35 grams per briquette; and
(e) have a sulphur content not exceeding 2% of the total weight.

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Source: https://www.legislation.gov.uk/uksi/2014/2366/schedule/paragraph/43 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuels-england-no-2-regulations-2014/schedule/paragraph-43
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.