Details of further modifications of the German antipersonnel S-Mine 35
have recently been received. The modifications do not appear to follow any set
rule. There is as yet no documentary evidence that the Germans have special
designations for mines incorporating different modifications. Some of the more
important alternate modifications of this mine are set out below. Items marked
asterisk (*) are not modifications but are of original design.
(a) Top Plate
(1) Flat plate extends over outer container to form a seal
*(2) Convex plate fits flush inside the outer container, with a sheet metal seal
(3) Convex plate fits inside and slightly below the level of the outer container, with a wax seal.
(b) Explosive Filling
*(1) Poured TNT - weight 14 oz (approx)
(2) TNT powder - weight 8 oz
(c) Shrapnel Filling
*(1) Steel balls
(2) Short lengths of 3/8 in mild steel rod
(3) Small pieces of scrap steel.
(d) Detonator Tubes
(2) Compressed paper
(e) Detonator Tube Cover Plugs
*(1) Without positioning springs
(2) With positioning springs
(3) Without positioning springs but with wooden plugs fitting into ends of detonator tubes.
(f) Attachment of Inner Container to Outer Container
*(1) No attachment
(2) Three small steel or brass screws
(g) Sealing Washers
(h) Propellant Charge Cover Plate
(2) Flexible plastic material
It has been suggested that the detonator positioning springs were incorporated
so that individual mines would burst at a more uniform height above ground.
The presence of the three securing screws, which must be sheared before
the mine is ejected from its outer container, will reduce the height to which the
mine rises prior to exploding.
The reduction in weight of explosive, through the use of TNT powder,
will most probably reduce the lethal radius of the mine but the effects of steel
scrap, as against steel balls, may be more dangerous.