Abstract: An arrangement in a mine which is capable of being neutralized, comprising detecting means (33) operative to detect a neutralization of the mine, and initiator means (3) adapted to initiate detonation of a spotter charge (5) incorporated in the mine in response to the detection of a neutralization, and a spotter (1) which is arranged to be propelled from the mine by said detonator charge to the surface of the ground, in order to disclose the location of the mine. A penetrator (4), which is intended to drive a pathway through the ground to facilitate passage of the spotter (1), is arranged forwardly of the spotter in the mine, as seen in its direction of travel. The spotter (1) is capable of forwardly driving the penetrator (4) during a first phase of the spotter firing sequence; and the arrangement further includes a separating device (9) which is intended to separate the spotter from the penetrator during a second phase of the firing sequence.