# The Coal Mines (Precautions against Inflammable Dust) Order 1956, Paragraph 3


At any such mine newly opened after the sixteenth day of December, nineteen hundred and eleven, no plant shall be used for screening or sorting coal within a distance of two hundred and forty feet from any downcast shaft:
Provided that an inspector may by notice served on the manager exempt a mine from the provisions of this regulation.

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Source: https://www.legislation.gov.uk/uksi/1956/1769/schedule/paragraph/3 (the official version)
Page: https://openlegislation.uk/coal-mines-precautions-against-inflammable-dust-order-1956/schedule/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.