For 60 years, a German archive documenting Nazi war crimes helped survivors of the Holocaust trace missing relatives but the archive was closed to the public. There are 17 million names in it. The Nazis recorded everything; from the number of lice on a prisoner”s head to the exact moment of execution. There is very personal information, too: names of collaborators, homosexuals and prostitutes. Now, 60 years after the end of the war, many feel they should be opened.