# The Smoke Control Areas (Authorised Fuels) Regulations 1991, Paragraph 19

Extent: E+W+S
Status: prospective

Thermac briquettes, manufactured by Thermac Fuels Limited atShildon, County Durham, which—
(a) comprise anthracite (as to approximately 90 per cent of the totalweight) and cold-setting organic binder (as to the remaining weight);
(b) were manufactured from those constituents by a process involvingroll-pressing;
(c) are unmarked pillow-shaped briquettes and have an average weight of48 grammes; and
(d) have a sulphur content not exceeding 1.5 per cent of the totalweight.

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Source: https://www.legislation.gov.uk/uksi/1991/1282/schedule/1/paragraph/19 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuels-regulations-1991/schedule-1/paragraph-19
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.