Electric fence kept insulated from the earth and from any materials that will conduct electricity and ignite or short out the fence. Fencing must therefore avoid vegetation, and cannot be attached directly to wood or metal posts. Typically, wooden or metal posts are driven into the ground and plastic or porcelain insulators are attached to them, or plastic posts are used. The conducting material is then attached to the posts. Electrified palisade fences are usually made from painted mild steel, galvanized steel, stainless steel or aluminium. Typically the fences are . The palisade fence is mechanically stronger than a typical steel cable
Type 9 wooden anti-tank mine firing it, triggering a detonator charge, followed by the main charge. Used primarily at junctions and road-blocks, because of the width of coverage it provided, the mine sensitivity could be adjusted between approximately 20 pounds of triggering pressure to 500 pounds by inserting small wooden blocks under the rim of the lid. Type 9 wooden anti-tank mine The Type 9 wooden anti-tank mine was an Italian bar type anti-tank mine used during World War II in North Africa. The box consisted of a lower section, containing the large warhead and fuzes and an upper, overlapping lid with two pivoting wooden