# The Coal and Other Mines (Ventilation) Order 1956, Paragraph 23


(1) No person other than the deputy in charge of a district affected or an official of the mine authorised by the manager or a person authorised by such a deputy or official shall start, stop, remove or alter any fan installed below the ground at any mine.
(2) A deputy or official shall not start or authorise any person to start such a fan on any occasion unless the deputy or official is satisfied that it is safe for the fan to be so started.

---
Source: https://www.legislation.gov.uk/uksi/1956/1764/schedule/FIRST/paragraph/23 (the official version)
Page: https://openlegislation.uk/coal-and-other-mines-ventilation-order-1956/schedule-FIRST/paragraph-23
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.