According to today's Miyazaki Nichi-nichi Shimbun, an American soldier's dog tag together with 30 bullets of 20-mm machine gun and 4 incendiary bombs were unearthed from a construction site in the Hyuga city, Miyazaki prefecture, on July 3. They are likely to be remains of B29 crashed at the site 64 years ago. According to the report, the name carved on the surface of the stainless-steel dog tag reads "JULIAN W STEELE".
According to this page in Japanese, all of the crews including Mr. Steele stayed alive after the crash, sent to Tokyo, where they were detained in a camp. All of them could return to the US after the war.
You can see a picture of the crews here.