Patent US3740193
 
In further support of our ongoing theses, that: Needed Hydrogen for the Hydrogenation and Liquefaction of Coal can be readily generated from reactions between Steam and Coal; and, that Big Oil and our own US Government have known that to be true for quite some time, we submit, from nearly four decades ago, from well before the concerted OPEC extortions, Persian Gulf conflicts and assorted oil-related environmental disasters we've subsequently endured, the enclosed and attached US Patent.
 

http://www.co2management.org/proceedings/Abdulatif_Al_Musabbeh_Final.pdf 
 
Do we really want to, a few years down the road, still be forced to buy our gasoline from OPEC - even after their oil fields have run dry?
 
Unless we, in the United States, wake up to the facts that Coal can, cleanly and efficiently, be converted into liquid fuels, and so can Carbon Dioxide, we will be.
 
Herein, we see that Saudi Arabia knows the truth of the fact, that, Carbon Dioxide, as is vented to the atmosphere in copious quantities from natural gas fields and oil refineries, can be reclaimed and recycled, as we have, from authoritative sources, including our own United States Government, already documented to be feasible, into the valuable liquid fuel, and raw material for making Gasoline and plastics, Methanol.
 

Patent US3275546
 
We continue, in this submission, in as orderly a fashion as we are able to manage, to chronicle the development, by our local Consolidation Coal Company, throughout multiple decades, of very refined and highly-developed processes for the conversion of Coal into liquid hydrocarbons.
 
Herein, we see that they devoted some successful effort to overcoming and minimizing the effects of a problem we have previously documented, in processes both for the conversion of Coal and for the Methane reforming of Carbon Dioxide to synthesize liquid hydrocarbons: the deposition of Carbon and Ash on catalyst surfaces with subsequent degradation of catalyst efficiency.
 
Consol found the solution to that problem in process design rather than in chemistry.
 

United States Patent: 3726784
 
This Esso Coal conversion patent, as linked above, is, for us, very technically dense. They have a lot going on in here.
 
We'll try to sort it out a bit, following the excerpts, but, look sharp and you'll see that they're liquefying Coal using a Coal-derived liquid as the solvent, and, at the same time, recovering Hydrogen-rich off-gasses to use in the hydrogenation, the hydrotreating, of the resulting Coal liquids.