
The TMD-40 mine is similar to the wooden version of the TM-35(M) but it is not so heavy and contains a little less explosive. The TMD-40 is about 23 1/2 inches long, 5 1/2 inches wide, and 4 inches high. It contains seven 400-gram and four 100-gram blocks of TNT (7.1 pounds). It weighs a total of 11 to 12 pounds. The mine is painted field gray except in winter when it is painted white. The abbreviation TMD-40 in Russian letters is stenciled in black on top of the lid.
These mines are laid in rows, with distances of about 2 feet between mines. They are used against vehicles and light and medium tanks.
A pressure of at least 550 pounds on the lid crushes the top of the lid, forcing one or both of the wooden pressure pieces down onto the wooden fuze-actuating levers. This action pulls the striker-retaining pin from the MUV pull fuzes and explodes the mine.
Filler - TNT, 7.1 lbs (3.2 kg)
Length - 23.5 in. (597 mm)
Height - 4 in. (102 mm)
Width - 5.5 in. (140 mm)
TM 5-280, Foreign Mine Warfare Equipment (1963)
TM 5-223A, Soviet Mine Warfare Equipment (1951)