>ADSM has expired some files that I need to restore.

Krish - If the files are gone from the *SM database, they are
        irretrievable without restoring that database.
Query Content is one way of verifying what logically remains
on the volume.  The ("Full") volume may not have been physically
reused yet, but the expired data on it is no longer accessible.
If you had a copy of the files on tapes belonging to another
storage pool, that would be a means of getting the data back
without restoring your *SM database.
   Richard