# The Smoke Control Areas (Authorised Fuels)(Wales) Regulations 2001, Paragraph 30


Thermac briquettes, manufactured by Coal Products Limited at Shildon, County Durham, which—
(a) comprise anthracite (as to approximately 90 per cent of the total weight) and cold-setting organic binder (as to the remaining weight);
(b) were manufactured from those constituents by a process involving roll-pressing;
(c) are unmarked pillow-shaped briquettes and have an average weight of 48 grammes; and
(d) have a sulphur content not exceeding 1.5 per cent of the total weight.

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Source: https://www.legislation.gov.uk/wsi/2001/3762/schedule/1/paragraph/30 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuelswales-regulations-2001/schedule-1/paragraph-30
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.