215Blasting equipment precautions

215 Blasting equipment precautions When a charge is prepared— (a) only tools made from non-ferrous materials may be used; and (b) if a metal spike is used to form a hole in a cartridged explosive, the spike must not come into contact with any metal or hard surface as it emerges; and (c) if practicable, only whole cartridges may be charged into blast holes; and (d) any metal implement used to cut explosives used for blasting operations must not operate with metal-to-metal contact or come into contact with any hard surface.