# The Coal Mines (Cardox and Hydrox) Regulations 1956, Regulation 25


(1) Every person who has fired a shell shall—
(a) ascertain by personal examination whether it is safe for ordinary working to be resumed in each working place affected by that shot; and
(b) ensure that any necessary action is taken to make each such place safe for such working.
(2) Where a round of shells has been fired the person firing them shall not make that examination before the expiry of five minutes.

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Source: https://www.legislation.gov.uk/uksi/1956/1942/regulation/25 (the official version)
Page: https://openlegislation.uk/coal-mines-cardox-and-hydrox-regulations-1956/regulation-25
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.