The charge container is in the form of an inverted funnel (i.e. a cone with a cylindrical stem) which is painted the usual deep olive green and is mounted on a hexagonal plate of plastic. The plate has a large central hole, corresponding with the liner of the "hollow" in the filling, and has three magnets fitted in equally spaced positions on the underside. The stem portion, at the top, is designed for the insertion of a detonator and the fitting of an igniter. The overall length without igniter is 10.7 inches and the weight 7 lb. 11 oz. The total weight of explosive is 1 lb. 12 oz. 11 dr.

The container is of light steel construction and is in the form of a cone fitted with a cy-linder at the top. The base of the container is flanged to engage with the overlapping base ring bolted to the plastic plate. The base ring also engages the steel cavity liner which forms the inner wall of the charge container. The liner is a simple 60 degree cone and is of mild steel with a thickness of 0.079 inch.

The cylindrical portion has a screwthread formed near the top end to receive a steel clo-sing cap which has an igniter socket held in a central hole by a steel securing ring. The socket has a short internal screwthread for the reception of the igniter and has a deto-nator pocket secured to a flange at its base. According to reports, the igniter B.Z. 24 and the No. 8 detonator are used. Details of the B.Z. 24 are included in the description of the stick hand grenade in Pamphlet No. 5. Types of No. 8 detonators are shown in Pamphlet No. 6 (Fig. 2). The igniter B.Z. 39 described in Pamphlet No. 6 is also reported to be used.

The three magnets fitted to the plastic plate each consists of two pole pieces connec-ted near the top by a rectangular permanent magnet and bent at the base ends to leave only a small gap between the poles. Each of the pole pieces is secured to the plastic plate by a screw. The permanent magnet is held in position by two brass bolts. Keepers for the preservation of the magnets, by connecting the lower ends of the poles are re-ported to be in use but there are not yet available. The magnetic assemblies are each capale of lifting about 14 lb.

The main filling, contained between the cavity liner and the conical part of the container and also in the lower part of the cylindrical portion, consists of 1 lb. 9 1/2 oz. of cyclo-nite/wax 50/50 cast to a density of 1.67. The primer, contained in the cylindrical portion, consists of a 3 oz. 3 dr. pellet of P.E.T.N./wax 90/10 pressed to a density of 1.58. The pellet is pink in colour and has a cavity for the igniter socket and the detonator pocket. A packing of corrugated paper is inserted between the pellet and its container.

The charge is held in position on the armour plate by the magnets and may be thrown from a short distance. Trials at a distance of 16 feet have proved the magnets to be unreliable in holding the charge on a tank suspension. Using the friction igniter B.Z. 24 as the initiator, the belay between the pulling of the igniter twine and the detonation of the charge would be 4 1/2 seconds.

It is estimated that the charge will perforate a 110 mm homogeneous plate and retain enough energy to have good effect behind the plate. The cavity liner of 2 mm mild steel will give some fragments behind the perforation.