The ATM-74 is a North Korean wooden box mine, it is a copy of the Soviet TMD-B. It is a wooden box packed with blocks of TNT, the top of the mine has three planks of wood underneath the central plank is a pressure fuze similar to Soviet MV-5 pressure fuze.
Specifications Length: 320 mm Width: 290 mm Height: 160 mm Weight: 9 kg Explosive content: 6 kg of TNT Operating pressure: 200 to 500 kg
References Jane's Mines and Mine Clearance 2005-2006