 However, the shaped charge in the Elsie mine ensures that most of the force of detonation is directed upwards.As a result, it can penetrate a 12 ply vehicle tyre or 3/8 inch (approx 9 mm) mild steel plate.A person who has been injured by an Elsie mine generally has a small, deep, circular penetration wound which extends all the way through the bones of their foot and out the other side.