Here's a target market that could be potential for Zenyatta to break into with the remaining %: Carbon nanotubes.

Dr. Chahar, until last year, was on the Board for SouthWest Nanotechnology. Not sure why the reasons he left, but conflicting interests could be one reason (that "but" is a whole lotta speculation). It's a big, growing business segment, and for the small remaining percentage of graphite may be more than enough for that sector.

Anyways, it a potential market, and i'm not entirely convinced that nuclear will be revealed as the 4th.