It never occurred to me that this stuff needed to be mined. I thought you manufactured it. There is no process to make graphene?
“There is no process to make graphene?”
Graphene can be mechanically exfoliated from highly oriented graphite, however the sample sizes are small. Chemical vapor deposition is a more common method, though grain sizes (and hence electrical conductivity) varies greatly with process and cooling rates. Other methods are being pioneered at The University of Texas, which has the best lab in the world for graphene research (though one at Purdue and one in Korea are also excellent).