# The Stratified Ironstone, Shale and Fireclay Mines (Explosives) Regulations 1956, Regulation 24


(1) Any person charging a shot hole shall ensure that it is stemmed with sufficient suitable and non-inflammable stemming to prevent a blown out shot.
(2) Except where a device for pneumatic stemming approved by the Minister is being used, no person shall insert any tool not made entirely of wood into a shot hole containing explosive.

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Source: https://www.legislation.gov.uk/uksi/1956/1943/regulation/24 (the official version)
Page: https://openlegislation.uk/stratified-ironstone-shale-and-fireclay-mines-explosives-regulations-1956/regulation-24
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.