Syncrudes produced from Wyodak coal in the Catalytic Two-Stage Liquefaction (CTSL) process were upgraded in pilot plant tests by hydrotreating with Chevron's commercial ICR 106 catalyst. Two CTSL syncrudes were studied; the first had an end point (EP) of about 625/sup 0/F; the second, an EP of about 850/sup 0/F. In this report, results are compared to those obtained with syncrudes from single-stage liquefaction processes and another two-stage process (Integrated Two-Stage Liquefaction (ITSL)). In general, products from the two-stage liquefaction processes were easier to upgrade than those from single-stage processes. However, with all of the syncrudes, relatively small increases in EP made the oils more difficult to hydrotreat. The 625/sup 0/F EP CTSL was the easier to upgrade than the other syncrudes because of its relatively low EP and low heteroatom and high hydrogen contents. Both of the CTSL syncrudes were upgraded in a single hydrotreating step to diesel fuel, jet fuel, and a naphtha suitable for catalytic reforming. However, for the higher EP syncrude, the preferred route also required either a hydrocracking step or a second hydrotreating step. Transportation fuels made from all the syncrudes were fairly similar. Mainly, they were composed of cyclic hydrocarbons. There were, however, differences in product distributions depending upon syncrude boiling ranges. The middle-distillate fuels (jet and diesel) had high densities and, therefore, high volumetric energy contents. 14 refs., 16 figs., 49 tabs.