I saw this in real life once.

As the result of a high-altitude, mid-air collision during training, a fighter crashed into a farmer's field just outside the little base I was assigned to in Germany (back in the late 80s). It mostly came down in one piece, but since the tilled ground was so soft the wreckage ended up buried several feet deep. Various low-ranking enlisted personnel were detailed to use picks and shovels to dig it up . . . while the base Explosive Ordinance Technicians stood back at a safe distance . . . because use of powered excavating equipment would have made it more likely than otherwise that the live munitions would have gone off.

I happened to know one of airmen detailed to do the digging . . . and based on that sample, I suspect that the various departments dinged to provide personnel supplied the very dumbest of their dumb rocks in response.