We've presented you with a number of reports now, documenting the Coal utilization technology that was for a time being developed by the rather well-known Dow Chemical Company.
Among them have been, for only one example:
West Virginia Coal Association | Dow Chemical Coal to Methane | Research & Development; concerning: "United States Patent 4,609,679 - Producing Methane from Hydrogen and Carbon Monoxide; 1986; Assignee: Dow Chemical Company, MI; Abstract: Selectively produce methane under Fischer-Tropsch conditions using a catalyst consisting essentially of ruthenium supported on an oxide of tantalum, niobium, vanadium or mixtures thereof ".