I'm taking this from "American Tanks and AFVS of World War II" by Michael Green, which quotes a USMC report titled Armoured Operations on Iwo Jima dated March 16, 1945.
> The enemy practice of tying aerial bombs to a yard stick mine is an expensive method of mining. Their policy is to completely demolish the mine as distinguished from the German policy of merely stopping the tank with the mine and destroying it by gunfire
I was going from memory, which explains why I added "Torpedo warheads" to the list of things used to boost AT mines - I don't have any evidence of that happening, so feel free to disregard that part.