A method and an apparatus for clearing land mines includes a mine detonator, a unmanned propulsion device and a rake member-electromagnet combination. The mine detonator includes a roller assembly, which is connected to and propelled by a prime mover of the unmanned propulsion unit. The mine detonator additionally may include a segmented column of weights that function to exert ground pressure to detonate hidden land mines. The rake member-electromagnet combination includes a rake member to turn up soil as the device advances in a minefield, and a magnetic member to pick up surface or sub-surface metal on the minefield.