This page uses content from Wikipedia and is licensed under CC BY-SA.

M23 chemical mine

An image from a video showing a VX filled M23 mine.

The M23 is a United States steel cased chemical landmine. The mine was developed in the late 1950s and early 1960s, and approximately 100,000 units were produced. The U.S. completed its destruction of its stock at the Umatilla Chemical Depot in 2008 and the Johnston Atoll Chemical Agent Disposal System in 2000.[1][2]

The mine is broadly similar to the M15 anti-tank mine in appearance, with the addition of four pairs of small ridges along the top surface. The mine has two secondary fuse wells in addition to the primary fuse well and can be set to operate either for anti-vehicle or anti-personnel purposes. It is normally fitted with either an M603 or M608 fuse. Upon activation, the bursting charge breaks open a thin steel casing, heating and spraying VX nerve agent to form an aerosol.[3]


  • Diameter: 13 inches (0.33 m)
  • Height: 5 inches (0.13 m)
  • Weight unfused: 22 34 pounds (10.3 kg)
  • Content: 10 12 pounds (4.8 kg) of VX nerve agent and 13 ounces (0.37 kilograms) Composition B4 bursting charge.


  1. ^ Tomlinson, Stuart (7 November 2008). "Last nerve gas landmine destroyed at Umatilla facility". Retrieved 6 June 2019.
  2. ^ TenBruggencate, Jan (4 December 2000). "Army completes chemical munitions disposal at Johnston Atoll". Retrieved 6 June 2019.
  3. ^ Hoenig, Steven L. (2002). Handbook of chemical warfare and terrorism. Greenwood Press. p. 79. ISBN 9780313324079.