# The Smoke Control Areas (Authorised Fuels) (Scotland) (No. 2) Regulations 2008, 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/2008/295/schedule/paragraph/40 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuels-scotland-no-2-regulations-2008/schedule/paragraph-40/enacted
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.