National Graphite Corporation (NGC), based in the US, was focused on bringing the Chedic Graphite Mine back into commercial production. In June 2013 they signed an agreement with American Graphene to jointly explore graphene opportunities and employ a new sonication process to reduce graphite to graphene.
NGC was a public company (OTCQB: NGRC), but its web site is not working and it is not clear if this company is still in business.
5466 Canvasback Rd.
Blaine, WA 98230