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ment was known as "Smoke Candle, HC, M-II," (later called "Smoke Omnade, HC, M8").

Smoke Candle, //C, M-II, consisted of a cylindrical tin container 2*4e in- lTi diameter and 4}£ in. high, filled with a solid smoke mixture and a starting mixture and had a fuse mechanism for firing. With the fuse attached, the height of the candle is 53i in. For details see Fig. 17.

A zinc cup, circular in shape, £ in. in diameter, and ?4 in. deep, was placed in a depression left in the top of the smoke mixture. The top of the cup was flanged outward, the flange being 2i6 in. wide. The flange of the starter cup covered the entire surface of the mixture.

The container top, in which there were four 14 in. holes covered by squares of adhesive tap6 and to which a brass adapter was riveted, was fitted to the can on top of the zinc starter cup. Into the brass adapter was assembled a fuse, M-I.

The smoke mixture was composed of hcxachlorethane, powdered zinc, ammonium pcrchlorate, and ammonium chloride, and the starting mixture consisted of potassium nitrate, antimony trisulfide, and dextrine.

The candle, with fuse attached, weighed approximately 134 lb.

When the safety pin of the fuse was pulled and the lever released, the striker fired the primer. This ignited the delay element.which in turn ignited the starting mixture. The starting mixture burned through the zinc cup and started a chemical reaction of the smoke mixture, generating considerable heat with the formation of zinc chloride.

The zinc chloride escaped into the air as a dense white smoke, composed of finely divided solid particles, which readily absorbed moisture and became highly obscuring liquid particles.

The candle burned from 2 J{ to 3,^4 minutes in full volume. A small stream of vapor lasted for possibly }i minute longer. Figure 18 shows Smoke Candle, HC, M-II, in operation.

To fire, the candle was grasped with lever held firmly against the candle body and the safety pin was withdrawn, keeping a firm gra."p around the candle and lever. The candle was thrown with u full swing of the arm, like a grenade, or placed on the ground. As the candle was released from the hand, the lever dropped away, allowing the striker to fire the primer.

The candle could not be thrown into or placed within 5 ft. of dry grass or other readily inflammable material if a fire was to be avoided. After the candle was ignited, personnel remained at least 5 ft. away from the burning candle. While the candle was practically harmless, the smoke

was evolved with great vigor, and there was a tendency to throw out hot particles of residue.

Smoke candle, HC, M-II, was painted gray. A yellow band l12 wide was painted around the can, 2 in. from the top. Stenciled in yellow

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