A timeless classic. Sticks to any surface and explodes shortly after an enemy enters its trigger area. And if it fails to find a target, it can be safely disarmed and retrieved. Note: proximity trigger requires a few seconds for calibration.
— Item Description
About
The Proximity Mine is the Engineer's second unlockable grenade. Once thrown, it'll stick to a surface and following a three second delay it will activate its proximity trigger and display the trigger's range with a yellow circle on the surface it was deployed. When a creature enters its range the mine will then trigger and detonate a few moments later up to 4 times, the mine can't be triggered by a fellow dwarf or by small creatures such as Glyphid Swarmers. An idle Proximity Mine can be disarmed and retrieved by its owner, similarly to the Satchel Charge if not detonated.