reporter: cbs news has learned that injuries and fatalities from landmines have now surpassed those caused by incoming artillery. and while new equipment like the u.s. bradley fighting vehicle is saving lives, soldiers are at risk the moment they step outside. he lost a leg, but survived. on an exercise in zaporizhzhia, the mind hunters, the 35th marine brigade, take us through a difficult scenario, diffusing russian mines they removed from the battlefield. it is not just the sheer number of minds they are finding, but the different types. antitank, antipersonnel. one particular mine springs out of the ground to about that height, and then spray s shrapnel every direction. call sign mr. brown shows us an array of trophy minds triggered by tripwires. pressure plates, minds booby trapped to blow up even we being removed.