46. The following provisions must be complied with in loading and unloading vehicles used to transport explosives:(a) whoever is employed to load or unload explosives in a vehicle or to drive a vehicle transporting explosives must take all necessary precautions to prevent unrequired persons from having access to such explosives;
(b) once the work of loading or unloading a vehicle is started, it must be continued without interruption and finished as soon as possible.