232Use of ANFO

232 Use of ANFO (1) This section applies if a shot-firer pneumatically loads ANFO. (a) the equipment used for the loading is approved; and (b) the mixture is loaded through a safety tube; and (c) when loading the mixture, the pneumatic loader is earthed through a resistance of not more than 1MΩ; and (d) water lines, compressed air lines, wire-covered hoses, rails and permanent electrical earthing systems are not used as a means of earthing the loader; and (e) if electric detonators are used with pneumatic loading—the electric detonators are of the protected kind; and (f) no part of the equipment that may come into contact with ammonium nitrate or ANFO is composed of galvanised iron, galvanised steel, or any zinc, lead, copper or any alloy of those metals. safety tube means a semiconductive plastic or rubber hose with an electrical resistance of— (a) no less than 15 000Ω per metre; and (b) no more than 2MΩ, measured along the length of the hose.