# The Smoke Control Areas (Authorised Fuels) (England) (No. 2) Regulations 2014, Paragraph 22

Extent: E+W+S

Dragonbrite briquettes, manufactured by Tower Colliery Limited at Aberdare, Mid Glamorgan, South Wales, which—
(a) comprise tower duff (as to approximately 95% of the total weight) and a resin based binder (as to the remaining weight);
(b) were manufactured from those constituents by a process involving cold cure roll pressing;
(c) are pillow-shaped briquettes marked with the letter “T” on one side;
(d) have an average weight of 50 grams per briquette; and
(e) have a sulphur content not exceeding 1% of the total weight.

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Source: https://www.legislation.gov.uk/uksi/2014/2366/schedule/paragraph/22 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuels-england-no-2-regulations-2014/schedule/paragraph-22
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.