In a fairly recent dispatch, now accessible on the West Virginia Coal Association's web site via the link:
we made report of:
"United States Patent 6,656,238 - Coal-based Carbon Foam; 2003; Inventors: Darren Rogers and Janusz Wladyslaw, Wheeling and Glen Dale, WV; Assignee: Touchstone Research Lab, Triadelphia, WV; Abstract: A method for the manufacture of coal-based carbon foams from a coal particulate starting material that comprises blending from 1 to about 10% by weight of pitch with the coal particulate before foaming";