What fails in motion picture film of the type that Harbeck would have used would be the cellulose nitrate base stock, and even if perfectly sealed, protected, and kept in ideal temperture (yeah-2 1/2 down would be plenty cold enough), the degradation process can sometimes be....explosive. It would be marvelous and historically very significant to have the film, and while it is possible that it survives, it is highly unlikely, and then there's the recovery problem. Woundn't it have been wonderful if he'd chucked those cans into a boat, even if there was no room for him? WILL