The PTM-3 (Russian: ПТМ-3: ПротивоТанковая Мина-3) is a Soviet scatterable self-liquidating shaped charge anti-tank mine.
[3] The mine has two arming stages - pyrotechnic and mechanical, and has a magnetic influence battery-powered fuze BT-06 (Russian: БТ-06).
Once the cassette bursts, the rope pulls on the pin of the mine, completing the mechanical stage of arming.
[4] When on the ground, upon the burnout time of the pyrotechnic moderator has elapsed, the fuze moves into "combat position".
If the mine must absolutely be removed before the self-liquidation period has elapsed, it can be destroyed by machine gun fire, preferably mounted on an armored vehicle.