TECO has found the raw materials and wants to sell those raw materials to the fabricators of Graphene materials? LOL! I don't get the clue but that's ok.  I'm just thinking like a Mechanical Engineer.

Mechanical properties: As of 2009, graphene appears to be one of the strongest materials ever tested. Measurements have shown that graphene has a breaking strength 200 times greater than steel , with a tensile modulus (stiffness) of 1 TPa (150,000,000 psi )

http://en.wikipedia.org/wiki/Graphene