# The Smoke Control Areas (Authorised Fuels) (Wales) Regulations 2008, Paragraph 14


Dragonbrite briquettes, manufactured by Tower Colliery Limited at Aberdare, Rhondda Cynon Taff which—
(a) comprise tower duff (as to approximately 95 per cent 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 and have an average weight of 50 grammes; and
(d) have a sulphur content not exceeding 1 per cent of the total weight.

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Source: https://www.legislation.gov.uk/wsi/2008/3100/schedule/paragraph/14 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuels-wales-regulations-2008/schedule/paragraph-14
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.