inert mine

inert mine

A mine or replica of a mine incapable of producing an explosion.
References in periodicals archive ?
The Navy wants to increase training in several areas, including adding between a dozen and 24 air-to-air missile exercises, increasing the number of bombing exercises it conducts from 24 to 30, and adding an underwater training minefield, with inert mines.
* You can also attempt to procure actual inert mines (high quality but expensive) through Miltra Engineering Limited.