1.4B

Division 1.4 Substances and articles which present only a slight risk of explosion in the event

of ignition or initiation during carriage. The effects are largely confined to the

package and no projection of fragments of appreciable size or range is to be

expected. An external fire shall not cause virtually instantaneous explosion of

almost the entire contents of the package.

 

B Article containing a primary explosive substance and not having two or more effective

protective features. Some articles, such as detonators for blasting, detonator assemblies for

blasting and primers, cap-type, are included, even though they do not contain primary

explosives.