" Yet some music-business insiders regard this arrangement as a mixed bargain. When masters arrive at Iron Mountain, they say, institutional memory — archivists’ firsthand knowledge of poorly inventoried stacks — evaporates, as does the possibility of finding lost material, either by dogged digging or chance discovery. (Many treasures in tape vaults have been stumbled upon by accident.) Tapes can be retrieved only when requested by bar-code number, and labels pay fees for each request. For years, rumors have circulated among insiders about legendary albums whose masters have gone missing in Iron Mountain because labels recorded incorrect bar-code numbers. The kind of mass tape-pull that would be necessary to unearth lost recordings is both financially and logistically impractical. "
Fantasy's tape vaults were moved to Iron Mountain without much preparation - I know that they always were kept in a very casual fashion, so there's little hope for any vault discoveries from the Riverside, Prestige, Contemporary, or Fantasy labels.
“Just endless rows of stuff. It’s perfectly safe, but there’s no access, no possibility of serendipity. Nearly all the tapes that go in will never come off the shelf. They’re lost to history.”