3519.     ---------------.  [UNDERWOOD, A. J. V.]  Utilization of Oil Shales and Cannel Coals in Connection With Production of Synthetic Oils.  Inst. Petrol. Conf. June 1938, pp. 468-473; Chem. Abs., vol. 33, 1939, p. 3571.

        Possibilities of combining the carbonization of oil shales and cannel coals with processes for the production of synthetic oils by the Bergius or Fischer-Tropsch processes are discussed.  An outline is given of various schemes in which the solid residue from the carbonization of cannel coal is utilized for these synthetic processes, and the scale of operation that would probably be necessary is indicated.