# The Smoke Control Areas (Authorised Fuels) Regulations 1991, Paragraph 10

Extent: E+W+S
Status: prospective

Fireglo briquettes, manufactured by Les Combustibles de Normandie atCaen, France, and by La Société Rouennaise de Defumage atRouen, France, which—
(a) comprise washed Welsh duffs (as to approximately 92 per cent of thetotal weight) and coal pitch binder (as to the remaining weight);
(b) were manufactured from those constituents by a process involvingroll-pressing and heattreatment at about 330°C;
(c) are ovoids with three lines on one side and are smooth on the otherside and have anaverage weight of 30 grammes; and
(d) have a sulphur content not exceeding 0.8 per cent of the totalweight.

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Source: https://www.legislation.gov.uk/uksi/1991/1282/schedule/1/paragraph/10 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuels-regulations-1991/schedule-1/paragraph-10
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.