One Step Beyond. Link to splash page

PP Mi-Sr

Mine PP Mi-SrTechnical drawing of Mine PP Mi-Sr
Type Anti-Personnel-Mine
Diameter 102 mm
Height 152 mm
Weight 3.2 kg
Explosive weight 360 g
Explosive type TNT
Operating pressure 3-8 kg
Detectability Easily detectable
Manufacturer Former Czechoslovak state factories
Used in Afghanistan, Angola, Cambodia, Costa Rica, Egypt, Eritrea, Ethiopia, Honduras, Mozambique, Namibia, Nicaragua, Somalia, Zambia

PP Mi-Sr is a steel-cased Anti-Personnel (AP) bounding mine; PP Mi-Sr II is a newer version of the same mine with minor modifications. On the top surface there are two slotted screw heads and a central fuze well. The larger of the screws is the filler plug, while the smaller one seals the detonator into position. Beneath the central fuze well is a tube which houses a delay element and propelling charge; this leads into a chamber at the base of the mine which contains a tether wire. The secondary fuze, set in the TNT main charge, uses a spring-loaded striker and retaining balls attached to the tether wire. The fragments, small pieces of chopped steel, are housed around the main charge in a cylindrical cavity. The mine is double skinned, the outer layer forming a pot which is roll-crimped onto the curved shoulder of the inner body. The threads on the fuze well and detonator plug well are the same, so that either will accept a fuze or electric squib. Both the propelling charge assembly and detonator assembly are removable. The mine is normally olive green with black stencilling.