If the were buried in trenches, it would most likely be the way they buried other aircraft. Open a trench, use a bulldozer to shove the planes in, and cover them up and compacting the aircraft and dirt covering them. If they could be found, they would most likely be in horrendous shape and not likely able to be restored without a lot of money. Building one from scratch would also be prohibitively expensive. Unfortunately, that aircraft is now but a memory to those who flew it.