(a) Primer cartridges shall be primed and loaded only by a qualified
person or a person working in the presence of and under the direction of a
qualified person.
(b) Primer cartridges shall not be primed until immediately before
loading boreholes.
(c) Only a nonsparking punch shall be used when priming explosive
cartridges.
(d) Detonators shall be completely within and parallel to the length
of the cartridge and shall be secured by half-hitching the leg wires around
the cartridge or secured by an equally effective method.
