# The Smoke Control Areas (Authorised Fuels) (England) Regulations 2008, Paragraph 36

Extent: E+W+S
Status: prospective

Sovereign briquettes, manufactured by Monckton Coke & Chemical Company Limited at Royston, near Barnsley, South Yorkshire, which—
(a) comprise anthracite (as to approximately 75% of the total weight), coal and reactive coke (as to approximately 21% 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;
(d) have an average weight of 130 grams per briquette; and
(e) have a sulphur content not exceeding 2% of the total weight.

---
Source: https://www.legislation.gov.uk/uksi/2008/514/schedule/1/paragraph/36 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuels-england-regulations-2008/schedule-1/paragraph-36
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.