length of such completed cartridge shall not exceed 30 inches. Gross weight of wooden boxes not to exceed 75 pounds and gross weight of fiberboard boxes not to exceed 65 pounds.

(2) Spec. 14, 15A, or 16A (§ 78.165, § 78.168, or § 78.185 of this chapter) wooden boxes, or spec. 12H, 23F, or 23H (§ 78.209, § 78.214, or § 78.219 of this chapter), fiberboard boxes, with inside containers which must be paraffined twoply paper bags not exceeding 122 pounds capacity, securely closed by folding the tops and securing the fold by tape, with not more than two such bags inserted into another two-ply paper bag which must be securely closed and dipped in paraffin after closing, or with not more than two inside containers which must be securely closed polyethylene bags not less than 0.004 inch in thickness of not more than 121⁄2 pounds capacity each packed in a securely closed polyethylene or paper bag and packed in polyethylene lined outside fiberboard boxes. Gross weight of wooden boxes not to exceed 75 pounds and gross weight of fiberboard boxes not to exceed 65 pounds.

(d) High explosives (gelatin dynamite and blasting gelatin) must be prepared as prescribed in § 73.61 (a) to (i) inclusive, except as otherwise specified, and in containers complying with the following specifications:

(1) Spec. 23G (§ 78.218 of this chapter). Fiberboard boxes. Not more than one cartridge in each box. High explosives packed in boxes consisting of more than one tube joined circumferentially are exempt from the requirements of § 73.61 (f) and (g) or when packed in boxes consisting of one tube closed at the ends are exempt from the requirements of § 73.61 (d) to (g), inclusive. Gross weight of boxes not to exceed 65 pounds.

(2) Spec. 14, 15A, or 16A (§ 78.165, § 78.168, or § 78.185 of this chapter). Wooden boxes, or spec. 12H, 23F, or 23H (§ 78.209, § 78.214, or § 78.219 of this chapter), fiberboard boxes, with inside containers which must be cartridges not exceeding 12 inches in diameter or 50 pounds in weight with length not to exceed 36 inches, or bags not exceeding 121⁄2 pounds each. Bags if not completely sealed against leakage by method of closure must be packed with filling holes up. Gross weight of wooden boxes

not to exceed 75 pounds and gross weight of fiberboard boxes not to exceed 65 pounds.

(3) High explosives (gelatin dynamite or blasting gelatin) may be shipped in a package consisting of not more than 6 cartridges of such explosives, each not exceeding 32 inches in length or 5 inches in diameter, cartridged with heavy paper in such manner as to have the approximate strength of a spec. 23G (§ 78.218 of this chapter) container, which cartridges shall in turn be placed in a 10ply paper tube not exceeding 11 feet in length. The outer paper tube must be equipped with a metal cone or equally efficient device on one end which shall serve to close that end of the tube and to the metal cone shall be affixed a wire threaded through fiber tubes running through the center of each of the 6 cartridges; or as an alternative to the single wire running through the cartridges in the outer tube at the center, two wires may be applied, one on each side of the cartridges and between the outside of the cartridges and the inside of the outer tube. In either event, cartridges and the outer tube shall be securely closed so as to prevent spilling of any loose explosive under any conditions normally incident to transportation and cartridges shall be so loaded and stayed within the car or motor vehicle as to prevent damage to individual containers. The total gross weight of each completed package shall not exceed 125 pounds. Shipments are authorized in carload or truckload lots only without transfer of packages other than such transfers as may be necessary in the event of mechanical failure of the car or vehicle in which originally loaded.

(e) High explosives (straight gelatin dynamites of 80 percent strength and over and blasting gelatin) must be packed in cartridges or in bulk in outside boxes. When packed in bulk in boxes double lining paper throughout must be used. Containers must comply with the following specifications:

(1) Spec. 14, 15A, or 16A (§§ 78.165, 78.168, or 78.185 of this chapter). Wooden boxes.

(2) Spec. 12H, 23F, 23G, or 23H (§ 78.209, § 78.214, § 78.218, or § 78.219 of this chapter). Fiberboard boxes. Spec. 23G (§ 78.218 of this chapter) must be packed in an outer container consisting of at least 7-ply heavy Kraft paper (see § 73.25 for additional required marking).

(3) Gross weight of wooden boxes not to exceed 75 pounds. Gross weight of fiberboard boxes not to exceed 65 pounds.

(f) Boxes containing high explosives must be plainly marked on top and on one side or end, except those made in compliance with spec. 23G which must be marked on the side or end, and kegs, drums, or barrels containing high explosives must be marked on both ends "HIGH EXPLOSIVES-DANGEROUS"

in letters not less than 16 inch in height. The tops of boxes except those made in compliance with spec. 23G, must be marked "THIS SIDE UP".

(g) High explosives with liquid explosive ingredient must not be offered for transportation by rail express, except as provided in § 73.86 and § 75.675 of this chapter.

[15 F. R. 8274, Dec. 2, 1950, as amended by Order 3, 16 F. R. 11775, Nov. 21, 1951; Order 9, 18 F. R. 802, Feb. 7, 1953; Order 11, 18 F. R. 5271, Sept. 1, 1953; Order 20, 20 F. R. 8099, Oct. 28, 1955; Order 25, 21 F. R. 3009, May 5, 1956; Order 27, 21 F. R. 7598, Oct. 4, 1956]

§ 73.64 High explosives with no liquid explosive ingredient and propellant explosives, class A. (a) High explosives containing no liquid explosive ingredients if their sensitiveness to percussion is not greater than that measured by the blow delivered by an 8-pound weight dropping from a distance of 7 inches on a compressed pellet of the explosive three-hundredths of an inch thick and two-tenths of an inch in diameter, confined rigidly between hard steel surfaces as in the standard Impact Testing Apparatus of the Bureau of Explosives, must be packed in cartridges or in bags in outside boxes. They must be packed in cartridges when their sensitiveness is greater than the limit prescribed herein. Such explosives when dry may be packed in strong sift-proof cloth or paper bags of capacity not exceeding 25 pounds. These explosives must be packed in outside containers complying with the following specifications:

(1) Spec. 14, 15A, or 16A (§§ 78.165, 78.168, or 78.185 of this chapter). Wooden boxes.

(2) Spec. 12H, 23F, or 23H (§ 78.209, § 78.214, or § 78.219 of this chapter). Fiberboard boxes.

(3) Spec. 10B (§ 78.156 of this chapter). Wooden barrels or kegs.

(4) Gross weight of wooden boxes not to exceed 140 pounds. Gross weight of fiberboard boxes not to exceed 65 pounds.

(5) When such explosives contain over 5 percent moisture, boxes must be lined with strong paraffined paper or other authorized material, spec. 2L (§ 78.30 of this chapter).

(6) When such explosives are in combination cartridges, consisting of column of explosives with core of dynamite, they may be shipped when packed in outside boxes with 65 pounds as the maximum gross weight. The column of explosives must be completely inclosed in waterproofed cloth or strong waterproofed paper and must not exceed 6 inches in diameter, 20 inches in length, or gross weight of 25 pounds.

(7) Spec. 23G (§ 78.218 of this chapter). Fiberboard boxes. Such explosives when packed in boxes consisting of more than one tube joined circumferentially are exempt from requirements of § 73.61 (f) and (g) or when packed in boxes consisting of one tube closed at the ends are exempt from requirements of § 73.61 (d) to (g) inclusive. The gross weight of boxes not to exceed 65 pounds.

(b) Boxes containing high explosives must be plainly marked on top and on one side or end, except those made in compliance with spec. 23G which must be marked on the side or end, and kegs. drums, or barrels containing high explosives must be marked on both ends "HIGH EXPLOSIVES DANGEROUS" in letters not less than 16 inch in height.

(c) High explosives with no liquid explosive ingredient must not be offered for transportation by rail express, except as provided in § 73.86 and § 75.675 of this chapter.

(d) Propellant explosives, class A, must be packed in containers as prescribed in § 73.93. Each outside container must be plainly marked "PROPELLANT EXPLOSIVES, CLASS A". [15 F. R. 8274, Dec. 2, 1950, as amended by Order 3, 16 F. R. 11775, Nov. 21, 1951; Order 9, 18 F. R. 802, Feb. 7, 1953; Order 17, 19 F. R. 8525, Dec. 14, 1954; Order 20, 20 F. R. 8099, Oct. 28, 1955]

§ 73.65 High explosives with no liquid explosive ingredient nor any chlorate. (a) High explosives containing no liquid explosive ingredient nor any chlorate if their sensitiveness to percussion is not greater than that measured by the blow delivered by an 8-pound weight dropping from a distance of 7 inches on a compressed pellet of the explosive three-hundredths of an inch thick

and two-tenths of an inch in diameter, confined rigidly between hard steel surfaces as in the standard Impact Testing Apparatus of the Bureau of Explosives, must be packed in cartridges, or in bags or metal containers in outside boxes. They must be packed in cartridges when their sensitiveness is greater than the limit prescribed in this section. Such explosives when dry may be packed in strong sift-proof cloth or paper bags or metal containers of capacity not exceeding 25 pounds. These explosives must be packed in outside containers complying with the following specifications:

(1) Spec. 14, 15A, or 16A (§§ 78.165, 78.168, or 78.185 of this chapter). Wooden boxes.

NOTE 1: Wooden boxes, having inside metal containers which are tightly and securely closed, may be equipped with hand holes in each end which must be not more than one inch by four inches and centered laterally not nearer than 1% inches from top edge of end of box.

(2) Spec. 12H, 23F, or 23H (§ 78.209, § 78.214, or § 78.219 of this chapter). Fiberboard boxes.

(3) Spec. 10B (§ 78.156 of this chapter). Wooden barrels or kegs.

(4) Gross weight of wooden boxes not to exceed 140 pounds. Gross weight of fiberboard boxes not to exceed 65 pounds. (5) When such explosives contain over 5 percent moisture, boxes must be lined with strong paraffined paper or other authorized material, spec. 2L (§ 78.30 of this chapter).

(6) When such explosives are in combination cartridges, consisting of column of explosives with core of dynamite, they may be shipped when packed in outside boxes with 65 pounds as the maximum gross weight. The column of explosives must be completely inclosed in waterproofed cloth or strong waterproofed paper and must not exceed 6 inches in diameter, 20 inches in length, or gross weight of 25 pounds.

(7) Spec. 23G (§ 78.218 of this chapter). Fiberboard boxes. Such explosives when packed in boxes consisting of more than one tube joined circumferentially are exempt from requirements of § 73.61 (f) and (g) or when packed in boxes consisting of one tube closed at the ends are exempt from requirements of § 73.61 (d) to (g) inclusive. The gross weight of boxes not to exceed 65 pounds.

(b) Amatol consisting of 80 percent ammonium nitrate and 20 percent trinitrotoluene, ammonium picrate, nitroguanidine, nitrourea, urea nitrate, picric acid, tetryl, trinitroresorcinol, trinitrotoluene, pentolite, cyclotrimethylenetrinitramine (desensitized), and soda amatol, in dry condition, in addition to containers prescribed in paragraphs (a) (1) to (5) of this section, may be shipped in containers complying with the following specifications:

(1) Spec. 14, 15A, or 16A (§§ 78.165, 78.168, or 78.185 of this chapter). Wooden boxes with strong paper or cloth bags of capacity not exceeding 50 pounds, packed with filling holes up.

(2) Spec. 21A or 21B (§§ 78.222 or 78.223 of this chapter). Fiber drums. Net weight not to exceed 200 pounds.

(c) Trinitrotoluene and pentolite, in dry condition, in addition to containers prescribed in paragraphs (a), (1) to (5) and (b) (1) and (2) of this section, may be shipped in specification containers as follows:

(1) Spec. 14, 15A, or 16A (§§ 78.165, 78.168, or 78.185 of this chapter). Wooden boxes with strong paper or cloth bags of capacity not exceeding 100 pounds, packed with filling holes up.

(2) Spec. 14, 15A, or 16A (§§ 78.165, 78.168 or 78.185 of this chapter). Wooden boxes with strong siftproof liners, spec. 2L (§ 78.30 of this chapter).

(d) The following materials may be shipped dry, in quantity not exceeding 4 ounces in one outside package for medicinal purposes or as reagents, by carriers by rail freight, rail express, highway, or water, as drugs, medicines, or chemicals, without other restrictions, when in securely closed bottles or jars properly cushioned to prevent breakage: (1) Ammonium picrate. (2) Dipicrylamine. (3) Dipicryl sulfide.

(4) Dinitrophenylhydrazine.
(5) Nitroguanidine.
(6) Picramide.

(7) Picric acid.

(8) Picryl chloride. (9) Trinitroanisole. (10) Trintrobenzene. (11) Trinitrobenzoic acid. (12) Trinitro-m-cresol. (13) Trinitronaphthalene. (14) Trinitroresorcinol. (15) Trinitrotoluene. (16) Urea nitrate.

(e) Ammonium picrate, picric acid, urea nitrate, trinitrobenzene, trinitroresorcinol, trinitrotoluene, cyclotrimethylenetrinitramine, and trinitrobenzoic acid when wet with not less than 10 pounds of water to each 90 pounds of dry material must be shipped in containers complying with the following specifications:

(1) Spec. 10B (§ 78.156 of this chapter). Wooden barrels or kegs. Not over 50 gallons nominal capacity.

(2) (See § 73.192 for shipments of wet ammonium picrate, wet picric acid, wet trinitrobenzoic acid, and wet urea nitrate not in excess of 16 ounces and § 73.193 for shipments of wet picric acid, wet trinitrobenzoic acid, and wet urea nitrate not in excess of 25 pounds.) (See § 73.212 for shipments of wet trinitrobenzene and wet trinitrotoluene not in excess of 16 ounces.)

(3) Spec. 5B (§ 78.82 of this chapter) metal barrels or drums or Spec. 21A or 21B (§ 78.222 or § 78.223 of this chapter) fiber drums. Authorized only for cyclotrimethylenetrinitramine wet with not less than 10 pounds of water to each 90 pounds of dry material in inside containers which must be bags made of at least 10-ounce cotton duck, rubber or rubberized cloth and securely closed. The dry weight of cyclotrimethylenetrinitramine in one container must not exceed 300 pounds. These bags containing the cyclotrimethylenetrinitramine must then be placed in a rubber bag, rubberized cloth bag or bag made of suitable watertight material which must be securely closed and then placed in the drum. If shipment of cyclotrimethylenetrinitramine is to take place at a time freezing weather is to be anticipated, it must be wet with a mixture of denatured ethyl alcohol and water of such proportions that freezing will not occur in transit.

(f) Amatol when cast in a solid block or column, in addition to containers prescribed in paragraph (a) (1) to (5) of this section, may be shipped in specification containers as follows:

(1) Spec. 13A (§ 78.141 of this chapter). Metal drums not exceeding 90 pounds gross weight.

(g) Nitrocellulose must be packed in wooden boxes complying with specs. 14, 15A, or 16A (§§ 78.165, 78.168, or 78.185 of this chapter), with inside packages which must be:

(1) Inside packages containing not more than 1 pound each of dry, uncompressed nitrocellulose, wrapped in strong paraffined paper or suitable sparkproof material. Completed outside package not to contain more than 10 pounds dry nitrocellulose.

(2) Inside packages containing compressed sticks or blocks of dry nitrocellulose wrapped in strong paraffined paper. Gross weight not to exceed 75 pounds.

(h) Shaped charges, commercial, having exposed lined conical cavities must have such cavities effectively filled; those having conical cavities that are covered shall be paired together with the cavities facing each other and with one or more pairs in a fiber tube, or so arranged that the conical cavities of the shaped charges at the ends of the column face toward the center of the tube. The shaped charges in the fiber tubes must fit snugly with no excess space and the fiber tubes containing the shaped charges must be packed snugly with no excess space in the outside containers. Shaped charges, commercial, must be packed in specification containers as follows:

(1) Spec. 14, 15A, or 16A (§§ 78.165, 78.168, or 78.185 of this chapter). Wooden boxes. Gross weight not to exceed 140 pounds.

(2) Spec. 12H, 23F, or 23H (§ 78.209, § 78.214, or § 78.219 of this chapter). Fiberboard boxes. Gross weight not to exceed 65 pounds.

(3) Spec. 12B (§ 78.205 of this chapter). Fiberboard boxes which must be manufactured of at least 275-pound strength (Mullen or Cady test) doublewall corrugated fiberboard and shall be provided with double-faced corrugated lining board (see § 78.205-15 of this chapter) having minimum strength (Mullen or Cady test) of 200 pounds. Individual charges of explosives shall be packed in inside securely closed, waterproof plastic containers, or in securely closed waterproof fiberboard containers having metal ends. Gross weight not to exceed 65 pounds. Inside individual containers shall be separated by means of double-faced corrugated fiberboard partitions of material not less than 175pound Mullen or Cady test.

(i) Boxes containing high explosives must be plainly marked on top and on one side or end, except those made in compliance with spec. 23G which must be marked on the side or end, and kegs,

drums, or barrels containing high explosives must be marked on both ends "HIGH

EXPLOSIVES-DANGEROUS"

in letters not less than 1c inch in height. The tops of boxes, except those referred to in paragraph (a) (1) to (7) of this section, must be marked "THIS SIDE UP".

(j) [Reserved]

(k) High explosives with no liquid explosive ingredient nor any chlorate must not be offered for transportation by rail express, except as provided in § 73.86 and 75.675 of this chapter.

[15 F. R. 8274, Dec. 2, 1950, as amended by Order 1, 16 F. R. 5323, June 6, 1951; Order 3, 16 F. R. 11775, Nov. 21, 1951; Order 6, 17 F. R. 7280, Aug. 9, 1952; Order 9, 18 F. R. 802, Feb. 7, 1953; Order 11, 18 F. R. 5271, Sept. 1, 1953; Order 14, 19 F. R. 3259, June 3, 1954; Order 17, 19 F. R. 8525, Dec. 14, 1954; Order 20, 20 F. R. 8099, Oct. 28, 1955; Order 21, 21 F. R. 670, Jan. 31, 1956]

§ 73.66 Blasting caps and electric blasting caps. (a) Blasting caps, blasting caps with safety fuse or electric blasting caps in quantity of 1,000 or less are classified as class C explosives. See § 73.103.

(b) The outside of all blasting caps and electric blasting caps must be free from fulminate or other explosive compositions.

(c) Blasting caps containing not to exceed 50 grains of explosive composition each must be placed in strong interior containers, in which they must fit snugly. When caps are loaded vertically in interior metal containers, they must be covered by suitable elastic material placed over the caps. Not more than 100 such blasting caps may be packed in a single container. All inside containers must then be packed snugly in cartons or wrappings made of paper or pasteboard.

(d) Not more than 5,000 blasting caps, not exceeding 50 grains of explosive composition each, packed in inner containers as prescribed in paragraph (c) of this section, must be packed in outside containers complying with the following specifications:

(1) Spec. 14, 15A, or 16A (§ 78.165, § 78.168, or § 78.185 of this chapter). Wooden boxes (see § 73.67 (a) (1) Note 1) or spec. 12H, 23F, or 23H (§ 78.209, § 78.214, or § 78.219 of this chapter), fiberboard boxes, with inside containers which must be cartons or wrappings with

inside containers as prescribed in paragraph (c) of this section, which must be separated from the outside box by at least one inch of tightly packed sawdust, excelsior, or equivalent cushioning material. Gross weight not to exceed 150 pounds.

NOTE 1: Because of the present emergency and until further order of the Commission, fiberboard boxes, spec. 23F (§ 78.214 of this chapter), may be used in lieu of prescribed wooden boxes, spec. 14, 15A, or 16A (§§ 78.165, 78.168, or 78.185 of this chapter).

(e) More than 5,000 blasting caps, not exceeding 50 grains of explosive composition each, packed in inner containers as prescribed in paragraph (c) of this section, must be packed in outside containers complying with the following specifications:

(1) Spec. 14, 15A, or 16A (§ 78.165, § 78.168, or § 78.185 of this chapter). Wooden boxes (see § 73.67 (a) (1) Note 1) or spec. 12H, 23F, or 23H (§ 78.209, § 78.214, or § 78.219 of this chapter), fiberboard boxes, with inside containers which must be cartons or wrappings with inner containers as prescribed in paragraph (c) of this section, packed in an inside box made of sound lumber, a hermetically sealed metal box of metal not less than 30 gauge United States standard, or a sealed package made of 6-ply Sisalkraft Asphalt Laminated sheeting, or its equivalent; Asphalt Laminated sheeting shall consist of 2 plies of strong fibers, 2 plies of pliable asphalt, and 2 plies of protective cover. The minimum tensile strength shall be 20 pounds per inch width in each direction. The laminated sheet shall have a minimum water resistance of 24 hours and a maximum water permeability of 4 grams per square meter per 24 hours. The inside wooden box, metal box, or sealed package must be separated at all points from the outside box by at least one inch of tightly packed sawdust, excelsior, or equivalent cushioning material. Gross weight not to exceed 150 pounds.

NOTE 1: Because of the present emergency and until further order of the Commission, fiberboard boxes, spec. 23F (§ 78.214 of this chapter), may be used in lieu of prescribed wooden boxes, spec. 14, 15A, or 16A (§§ 78.165, 78.168, or 78.185 of this chapter).

(2) More than 20,000 blasting caps containing not to exceed 50 grains of explosive composition each, must not be placed in one outside package.