lashing the magazines and they shall be so lashed, chocked or braced as to prevent movement in any direction.

(h) Portable magazines shall carry the legend "Inflammable-Keep Lights and Fire Away", or "Flammable-Keep Lights and Fire Away."

§ 146.29-91 Pyrotechnic stowage. (a) Pyrotechnic ammunition shall be afforded ammunition stowage or special stowage in a location away from heat and so protected as to insure no moisture contacting the packages. This class of ammunition shall not be stowed in a hold or compartment with any other military explosives, except as permitted by the admixture chart (§ 146.29-99). Pyrotechnics shall not be overstowed with other cargo.

(b) For limited quantities of pyrotechnic ammunition an alternate stowage may be utilized consisting of stowing in metal lockers or portable magazines so located as to conform with the provisions of paragraph (a) of this section as regards other explosives, overstowage, heat, and moisture.

§ 146.29-93 Stowage of blasting caps, detonators, primer detonators, etc. Stowage of Classes III, VI and VIII type ammunition shall conform to the provisions of §§ 146.29-99 and 146.29-100, and to the following requirements:

(a) Class VIII ammunition, when stowed on board the same vessel with Classes II, IV, V, or VII military explosives, shall be separated as follows:

(1) With a permanent steel deck or bulkhead intervening, the separation shall not be less than 10 feet in any direction.

(2) Without a permanent steel deck or bulkhead intervening, the separation shall not be less than 25 feet in any direction.

(b) Class VIII ammunition, when stowed on board the same vessel with Classes IX, X, or XI military explosives, shall be separated as follows:

(1) With a permanent steel deck or bulkhead intervening, the separation shall be not less than 25 feet in any direction.

(2) Without a permanent steel deck or bulkhead intervening, the separation shall be not less than 40 feet in any direction.

(c) Class VIII ammunition shall not be stowed within 8 feet of the vessel's side.

(d) When Class VIII ammunition is stowed over tween-deck hatch covers, and military explosives are stowed in a hold below, a single layer of commercial 2-inch lumber is required over the tween-deck hatch cover to form the floor of the magazine. Under these conditions, wooden hatch covers may be considered an integral part of the permanent steel deck and the separation requirements of paragraphs (a) (1) and (b) (1) of this section shall apply.

(e) When Class III or VI ammunition is stowed with Class VIII ammunition the provisions governing the stowage and separations of Class VIII shall apply.

(f) When a portable magazine is used for detonator stowage, such magazine may be stowed in the square of a weather deck hatch.

(g) Upon approval by the Captain of the Port, a portable magazine containing Class VIII ammunition may be stowed in an isolated cabin or steel deck house secure from aircraft machine-gun fire and not subject to casual contact by persons on board the vessel.

§ 146.29-95 Ventilation of magazines. A magazine that is not fitted with ven

tilating ducts to the atmosphere shall be ventilated by omitting the top course of boarding on the sides of the magazine to provide a clear space at least 1 inch and not more than 6 inches below the lower flange or toe of the deck beam within the compartment or hold in which the magazine is constructed. Ventilators of systems feeding directly into a magazine or a hold in which military explosives are stowed shall be covered with a double layer of wire screen of not less than 8 x8 mesh at the weather end of the cowl. This screen shall be attached securely in place in such a manner as to insure a positive closure.

§ 146.29-97 Statements of characteristic properties and hazards. (a) In § 146.29-100 there are statements in italics setting forth certain characteristics and hazards of the substances or articles listed therein. It is not intended, nor shall it be assumed, that these statements set forth all of the characteristic properties or hazards of the particular substance or article and such statements as are shown are informative only.

(b) For the purpose of the regulations in this subpart Army Class XII explosives are treated as follows:

(1) Ammonium nitrate is classified as an oxidizing material.

(2) Dinitrotoluene (DNT) is classified as a high explosive Class IX.

(3) Wet nitrocellulose wet with 20 percent of water is classified as a flammable solid.

(4) Wet nitrocellulose wet with 30 percent of alcohol or flammable solvent is classified as a flammable liquid.

§ 146.29-99 chart. (a) A shaded block at an intersection of horizontal and vertical columns indicates that the particular class of military explosives shown by the heading of the horizontal column to the left

Explosives admixture

must NOT be stowed in the same hold or compartment with the particular class of military explosives indicated by the heading of the vertical column at the top of the chart. For specific provisions of stowage, and items included in each class, refer to § 146.29-100.

(b) In the chart the letters refer to the following notes:

NOTE A: Class II-F may be stowed in the same lower hold or tween-deck hold with Classes II-C, II-E, II-G, and III provided the Class II-F ammunition is bottom stowed and provided further that no other class of explosive or ammunition is stowed in the hold or tank below.

NOTE B: Class II-F may be stowed in the same deep tank, lower hold or tween-deck hold with Classes IV-A, IV-B, V, and VII: Provided, That the Class II-F ammunition is bottom stowed: And provided further, That no other class of explosives or ammunition is stowed in the hold or tank below.

NOTE C: Propellant charges Class II-B for separate loading artillery shell filled with Class XI-A or XI-B chemical may be stowed together in the same hold or compartment: Provided, That the propellant charges are "top stowed", the two items being separated by a type "A" dunnage floor. When so stowed the propellant charges shall not be overstowed with any other cargo.

NOTE D: Class II-J TH incendiary filled ammunition shall be stowed only in a deep tank or lower hold, and in all cases bottom stowed, except that a limited quantity shipment not in excess of 500 lbs. net TH content may be stowed on deck in a special magazine constructed of material as set forth in § 146.29-81 (c) and provided such magazine has an outer insulation of sand at least 3 feet thick on the bottom and not less than 1 foot thick on each side. There shall be only one such stowage per vessel and that stowage shall not be over a hatch in which military explosives or other dangerous articles are stowed.

NOTE E: Class V unfuzed and no fuzes packed in container) and Class VII (unfuzed and no fuzes packed in container) may be stowed with Class X.