Here is an interesting article about WWII aircraft salvors and their impact on the search for war dead: http://www.boston.com/news/world/australia/articles/2009/05/25/remains_are_lost_in_race_for_relics/?page=1
The article is quite interesting and raises the moral dilemmas inherent in this effort. Unsaid, however, is the fact that before these wrecked planes became valuable as relics, they were only worth their metal content. What makes the wrecks described in this article different is their inaccessibility. Planes that crashed in more easily accessible areas (with or without human remains) were long ago melted as scrap.