The, very nearly four decades old, Atlantic Richfield technology we report herein, as revealed by the United States Patent we enclose, confirms some earlier documentation we have provided you concerning the fact that exhaust, or "tail", gas, arising from the catalytic condensation of Coal-derived synthesis gas into liquid hydrocarbons, can be made so as to have some residual chemical value which can be further exploited.
Interestingly, ARCO's point, as explained herein by one of their scientists we have cited previously, seems to be that Coal synthesis gas can be generated in such a way that it has too much Hydrogen to be consumed in the initial catalytic synthesis of liquid hydrocarbons.