A set of inert mines are loaded into a canister (10), where each of the inert mines includes a locating feature (30) for a dispersion strap (22). A breech (14) includes a reusable slider housing (26). A closure cap (16) covers another end of the canister (10). An obturator (20) is inserted into a breech end of the canister (10) and connected as an interface between the canister (10) and a breech (14). The dispersing strap (22) is anchored to the breech (14) where the dispersing strap (22) is woven around the inert mines within the canister (10) such that the strap (22) traverses the locating feature (30) of at least some of the inert mines so as to disperse the mines in a simulated mine dispersion pattern when the canister (10) is fired.
