# The Smoke Control Areas (Authorised Fuels) (Wales) Regulations 2019, Paragraph 63

Extent: E+W

HouseFuel Smokeless Ovals, manufactured by Maxibrite Limited at Mwyndy Industrial Estate, Llantrisant, Rhondda Cynon Taf, which—
(a) comprise bituminous coal and petroleum coke (each as to approximately 10 to 15% of the total weight) and anthracite duff and starch binder (as to the remaining weight);
(b) were manufactured from those constituents by a process involving roll-pressing and heat treatment at about 260°C;
(c) are unmarked pillow-shaped briquettes with approximate maximum dimensions 68 millimetres, 63 millimetres and 38 millimetres;
(d) have an average weight of 110 grams; and
(e) have a sulphur content not exceeding 1.9% on a dry basis.

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Source: https://www.legislation.gov.uk/wsi/2019/50/schedule/paragraph/63 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuels-wales-regulations-2019/schedule/paragraph-63
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.