The Stratified Ironstone, Shale and Fireclay Mines (Explosives) Regulations 1956 No. 1943

PART VI Short firing—additional provisions for shafts and staple-pits

Primer cartridges

36.  No person other than a shot firer shall take a primer cartridge fitted with a detonator into a shaft and no shot firer shall take such a cartridge into a shaft otherwise than in a thick felt bag or other receptacle suitable for protecting it from shock.