# The Mines (Control of Ground Movement) Regulations 1999, Paragraph 4


For the purposes of paragraph 3–
(a) “powered support” means a support which is advanced and set to the roof by mechanical energy;
(b) “beam” means that part of a powered support system designed to be set to the roof; and
(c) “immediate forward support system” means a system of supports designed to be advanced and set to the roof immediately after extraction by a coal-getting machine.

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Source: https://www.legislation.gov.uk/uksi/1999/2463/schedule/paragraph/4 (the official version)
Page: https://openlegislation.uk/mines-control-of-ground-movement-regulations-1999/schedule/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.