3404.     THRING, M. W.  Underground Gasification and British Coal Measures.  Inst. Fuel, Wartime Bull., February 1944, pp. 103-104; Chem. Abs., vol. 38, 1944, p. 2471.

        Review of recent Russian methods of underground gasification, including the chamber, sloping seam, gallery, and radial methods.  The sloping seam method, applicable to seams inclined as much as 70°, appears most practical.  Gas produced varies 115-210 B.t.u. and is said to contain, during the suction phase, H₂ and CO in the proper proportions for hydrocarbon synthesis.

        TIBIRICA, J.  See abs. 2240.

        TIKHONOVA, Z. T.  See abs. 1789.