The complete round assembly for the 100-lb. Smoke Bomb M47A2 and AN-M47A3 con-sists of the following components:

1. 100-lb. Smoke Bomb M47A2 or AN-M47A3 filled with 100 pounds of WP (white phos-phorus) with burster well installed and burster well cavity plugged with a cork.

2. Burster M4 (1.56 pounds of tetryl) for high altitude bombing; or Burster M18 (260 grams of Black Powder and 260 grams Sand) for low altitude bombing; or Burster M7 (520 grams of Black Powder) may be substituted for either Burster M4 or M18. All bursters are 37.5 inches long by 1.0 inch in diameter. When loaded with PWP this bomb takes the Burster M20 (400 grams of tetryl) 37.5 inches long by 0.75 inch in diameter.

3. Arming wire assembly.

4. Bomb Nose Fuze AN-M126A1.

The nose fuze AN-M126A1 is installed in the 100-lb. Smoke Bomb M47A2 as follows:

1. Thread the arming wire through the front suspension lug of the bomb. The bomb is now ready to be installed in the airplane.

2. After the bomb is installed in the airplane, the fuze AN-M126A1 is screwed into the nose of the bomb, hand-tight, until it seats. Use no tools.

3. Thread the arming wire through the arming wire guide and tab on the vane of the fuze and adjust the wire to protrude four inches beyond the vane.

4. Slip two safety clips (Fahnestock connections) over the arming wire and push them up to the arming wire tab on the vane of the fuze.

5. Remove the seal wire from the fuze.

6. Remove adhesive tape from the fuze collar if present.

The nose Fuze AN-M126A1 lacks certain desiarble safety characteristics, because this fuze, although air arming, is constructed with the firing pin in line with the detonator. If the 100-lb. Smoke Bomb M47A2 equipped with this fuze is dropped nose down onto a hard surface from a height of serveral feet or more, the fuze, although unarmed, is liable to detonate the burster because the fuze body can be crushed sufficiently to force the firing pin into the detonator of the fuze.

The fuze AN-M162A1 may be used in the 100-lb. Smoke Bomb M47A2 by both land-ba-sed and carrier-based Naval aircraft providing that the fuze is installed only after the bomb has been installed in the aircraft, and providing that all bombs equipped with fuze AN-M126A1 are jettisoned before landing.

A new fuze, the M159, has been developed to replace the fuze AN-M126A1. The fuze M159 incorporates a detonator safe features and may be installed in bombs prior to their installation in the aircraft. The fuze M159 is safe for all takeoffs (including catapult) and landings (including arrested) anywhere.

The body of the 100-lb. Smoke Bombe M47A2 is painted blue-grey. All markings and letterings on the bomb is in yellow lacquer enamel or water-proof yellow ink. The bomb has 1-inch wide yellow band, denoting smoke filling. 5½ inches forward of the rear sus-pension band. The words "100-LB SMOKE BOMB M47A2" are printed in 1-inch letters be-ginning 1 inch aft of the forward suspension band. Immediately aft of this lettering is "BURSTER M4" and "WP FILLING" in ¾-inch letters. One-half inch forward of the rear sus-pension band in ½-inch letters is the lot number, date of loading, and the identification mark of the loading facility.

The 100-lb. Smoke Bomb M47A2 is shipped unfuzed and without burster or arming wire in a wooden box, one bomb to a box. The dimensions of the box are 9 3/14 inches by 10 19/32 inches by 50 3/16 inches. The shipping weight is approximately 150-170 pounds. The shipping box is marked with the same information which is on the bomb body.

The markings on the shipping box are for identification of the material, and to comply with Interstate Commerce Commission Regulations. If smoke shipping containers are re-painted, they should be marked with a facsimile of the original markings.

The Bursters M4 are packed fifty to a wooden box. The dimensions of the box are 3.44 feet by 1.09 feet by 0.69 feet. The approximate weight of the box and contens is 148 pounds. The Bursters M7 or M18 are also packed fifty to a wooden box of similar dimen-sions, weighing 128 pounds per box.

The Fuzes AN-M126A1 are packed twelve to a cardboard carton, four cartons to a wooden box. The dimensions of the box are 11 3/16 inches by 9 31/32 inches by 23 7/16 inches. The approximate weight of the box and contents is 80 pounds.

Arming wire assemblies are shipped in individual water-proof enevlopes, 100 envelopes to a carton, six cartons to a wooden box. The dimensions of the boxes may vary. The approximate weight of the box and contents is 75 pounds. The Navy will furnish Mark 3 arming wires supplied by the Army.