# The Smoke Control Areas (Authorised Fuels) (Scotland) Regulations 2008 (revoked), Paragraph 40


Supertherm briquettes, manufactured by Coal Products Limited at Immingham Briquetting Works, Immingham, North East Lincolnshire, which–
(a) comprise a blend (in the proportion of 19:1 by weight) of anthracite and medium volatile coal (as to approximately 93 per cent of the total weight) and cold-setting organic binder or a molasses and phosphoric acid binder (as to the remaining weight);
(b) were manufactured from those constituents by a process involving roll-pressing;
(c) are unmarked ovoids;
(d) have an average weight of 160 grammes per briquette; and
(e) have a sulphur content not exceeding 1.5 per cent of the total weight.

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Source: https://www.legislation.gov.uk/ssi/2008/154/schedule/1/paragraph/40 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuels-scotland-regulations-2008/schedule-1/paragraph-40/enacted
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.