If an explosive mixture cannot be used or loaded into a blast hole on the day it is made, the mixture must be—
(a) put in containers or packages that are—
(i) constructed of material that is compatible with the mixture;
(ii) closed, clean, non-metallic and leakproof; and
(iii) conspicuously labelled ‘EXPLOSIVE MIXTURE'; and
(b) kept in a magazine for which a licence is in force until the mixture can be used; and
(c) used as soon as practicable.