Did a quick search and didn't find this article posted or a like thread already in place.
Interesting to see the outcome of this - It's hard to believe that there isn't some documentation related to where he and his secretary ended up.
dca
http://www.russia-ic.com/news/show/8089/When the Russian Imperial House turned to the General Prosecutor’s Office with an appeal to rehabilitate Michael of Russia, who was shot in 1918, the search for his remains was started under the city of Perm.
The research expedition crew will consist of criminal investigators, archeologists and historians. The remains of Nicholas the Second’s younger brother II Mikhail Fyodorovich Romanov, who was shot down a month earlier than the tsar’s family, have never been looked for before.
The scientists are now doing it as volunteers. The main problem is to define the area of searching.
The expedition will engage about ten people. Experts are bringing along echo-sounding devices and metal detectors to look for bullets, shells, and metal buckles.