# The Smoke Control Areas (Authorised Fuels) Regulations 1991, Paragraph 2

Extent: E+W+S
Status: prospective

Anthracine N20 briquettes, manufactured by Agglonord,Agglomération du Nord, at Oignies, France, which—
(a) comprise anthracite (as to approximately 95 per cent of the totalweight) and starch as binder (as to the remaining weight);
(b) were manufactured from those constituents by a process involvingroll-pressing and heat treatment at about 150°C;
(c) are ovoids marked with one arrow and have an average weight of 20grammes; 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/2 (the official version)
Page: https://openlegislation.uk/smoke-control-areas-authorised-fuels-regulations-1991/schedule-1/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.