# The Coal and Other Mines (Metrication) Regulations 1978, Regulation 3: Amendments to the Coal and other Mines (Working Plans) Rules 1956


The Coal and Other Mines (Working Plans) Rules 1956 shall have effect subject to the following amendments:—
(a) in Rule 4(1) after the word “level” there shall be inserted the words “from Ordnance Datum or”;
(b) in Rule 5(1)—
(i) for the words “ten thousand feet below” there shall be substituted “or, if it is used for the purposes of Rule 4,” and
(ii) at the end there shall be added the words “or Ordnance Datum, as the case may be”, and
(c) in Rule 12(b), before the word “assumed” there shall be inserted the words “Ordnance Datum or”

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Source: https://www.legislation.gov.uk/uksi/1978/1648/regulation/3 (the official version)
Page: https://openlegislation.uk/coal-and-other-mines-metrication-regulations-1978/regulation-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.