The YaM-5 was a Soviet

Soviet Union

The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

 anti-tank blast mine with a wood case. Various wood was used. The mine consists of a rectangular wooden box with a hinged lid that overlaps the front of the mine. A slot in the hinged lid's side through which an MUV pull fuse is placed. A wooden pressure bar is sometimes used on the edge of the lid above the slot. A nail is placed horizontally through the loop of the MUV fuse's striker retaining pin and two loops on the bottom of the lid's slot.

A YaM-10 was also produced, it was a scaled up version of the YaM-5.

The wooden case was normally painted olive green, gray or white.

The mine was frequently used with anti-handling device

Anti-handling device

An anti-handling device is an attachment to or integral part of a landmine or other munition e.g. some fuze types found in air-dropped bombs such as the M83, cluster bombs and sea mines. It is specifically designed to prevent tampering. When the protected device is disturbed it detonates, killing...

s.

Downward pressure on the lid forced the nail downwards, withdrawing the striker retaining pin detonated the mine.

Specifications

	YaM-5	YaM-5K	YaM-5M	YaM-5U	YaM-10
Length	19.5 inches	23.6 inches	19.5 inches	19.75 inches
Width	7.75 inches	6.9 inches	7.6 inches	7.6 inches
Height	3.5 inches	6.4 inches	6.4 inches	6.4 inches
Weight	14 lb	16 lb	16 lb	14 lb	22 to 27 lb
Explosive content	11 lb				16 to 22 lb
Operating pressure	300 lb
Notes	No pressure block on lid	Long pressure block	Short pressure block	Long pressure block	Larger version of the mine