Section 272-8-002 - Use: Loading of Explosives in Blast Holes002.01 All drill holes shall be sufficiently large to admit freely the insertion of the cartridges of explosives.002.02 Tamping shall be done only with an approved non-sparking rods without exposed metal parts. Nonsparking metal connectors may be used for jointed poles. Violent tamping shall be avoided.002.03 No holes shall be loaded except those to be fired in the next round of blasting. Seismographic operations shall follow this procedure wherever possible for maximum safety, but where practicality will not permit, they are exempted from the provisions of this sub-section.002.04 Drilling shall not be started until all remaining butts of old holes are examined with a wooden or approved non-sparking rod for unexploded charges, and if any are found they shall be refired or washed out by or under the direction of a competent and experienced person before work proceeds.002.05 No person shall be allowed to deepen drill holes which have contained explosives.002.06 After loading for a blast is completed, all excess blasting caps or electric blasting caps and other explosives shall immediately be returned to their separate storage magazines.272 Neb. Admin. Code, ch. 8, § 002