Section 325.62126. Blasting and use of explosives.

Rule 62126. (1) Explosives are any of the following:

(a)      Any chemical compound, mixture, or device, the primary or common purpose of which is to function by explosion; that is, with substantially instantaneous release of gas and heat, unless such compound, mixture, or device is otherwise specifically classified by the United States department of transportation.

(b)   All material that is classified as Class A, Class B, and Class C explosives by the United States Department of Transportation.

(c)   Classification of explosives by the United States department of transportation is as follows:

(i)   Class A explosives: Possessing detonating hazards, such as any of the following:

(A)  Dynamite.

(B)  Nitroglycerin.

(C)  Picric acid.

(D)  Lead azide.

(E)  Fulminate of mercury.

(F)   Black powder.

(G)  Blasting caps.

(H)  Detonating primers.

(ii)    Class B explosives:   Possessing flammable hazard, such as propellant explosives, including some smokeless propellants.

(iii)    Class C explosives:  Including certain types of manufactured articles that contain Class A or Class B explosives, or both, as components, but in restricted quantities.

(2) Sufficient time shall be allowed, but not less than 15 minutes in tunnels, for the smoke and fumes to leave the blasted area before returning to the shot. The blaster shall inspect the area and the surrounding rubble to determine if all charges have been exploded before employees are allowed to return to the operation and in tunnels, after the muck pile has been wetted down.

History: 2014 AACS.