30 CFR 57.6303 - Initiation preparation.
(a) Primers shall be made up only at the time of use and as close to the blast site as conditions allow.
(b) Primers shall be prepared with the detonator contained securely and completely within the explosive or contained securely and appropriately for its design in the tunnel or cap well.
Title 30 published on 2014-07-01
no entries appear in the Federal Register after this date.