depth charges, mines, projectiles, boosters, or torpedoes (torpedo warheads) when separated from the explosive bombs, depth charges, mines, projectiles, boosters, or torpedoes (torpedo warheads) by not less than 3 feet. The intervening space of 3 feet must be filled with dry sand or dry earth in bags or in a crib so constructed or lined as to prevent sifting of the sand or earth. The crib must be secured against movement.

(2) When bomb fuzes are packed with bomb fin assemblies, either crated or boxed in wooden or metal containers, the sand or earth filled space between bombs and the fuzes may be omitted provided adequate blocking and bracing is supplied to prevent the bombs from crushing and injuring the detonating fuzes due to ordinary shocks incident to transportation.

is classified as dangerous by §§ 73.115, 73.150, 73.151, 73.240, 73.300, 73.326, 73.343, 73.381, or 73.391 of this chapter, the article must be prepared and offered for shipment in compliance with the regulations for the group within which it is properly classified.

§ 72.3 Labels required and prohibited articles.

(a) Section 72.5 also shows the kind of label when required on shipments of explosives and other dangerous articles and the articles which are prohibited for transportation.

§ 72.4 Explanation of signs and abbre

viations.

(a) An asterisk indicates that articles may or may not be classed as flammable liquids, flammable solids, oxidizing materials, compressed gases, poisons, or corrosive liquids by Parts 71-79 of this chapter. If so classed, such articles are subject to the regulations prescribed for articles within these definitions.

F. L.-Flammable liquid.

F. S.-Flammable solid.
Oxy. M.-Oxidizing material.

Cor. L.-Corrosive liquid.

Nonf. G.-Nonflammable compressed gas.

F. G.-Flammable compressed gas.

Pois. A.-Poison gas or liquid, class A.

Pois. B.-Poisonous liquid or solid, Class B.
Pois. C.-Tear gas, class C.

Pois. D.-Radioactive materials, class D.
Expl. A.-Class A explosives.
Expl. B.-Class B explosives.
Expl. C.-Class C explosives.
Not accepted-Means not to be offered or ac-
cepted for transportation.
Forbidden-Means prohibited by law.

Indicates that articles may be transported as rail baggage.

# Required for rail express shipments only. ## Required for rail express and water shipments only.

N. O. S.-Means not otherwise specified.
N. O. I.-Means not otherwise indexed.
N. O. I. B. N.-Means not otherwise indexed
by name.

NOTE 1: Where the word "INFLAMMABLE" is now painted, stencilled, or otherwise permanently marked on tank cars, cargo tank motor vehicles, portable tanks, or other containers, it may be so continued until such tanks or other containers are repainted, restencilled or both, and at such times shall be replaced with the word “FLAMMABLE” unless otherwise ordered by the Commission.