682.    DEMANN, W.  [Semicoke for Chemical and Metallurgical Processes.]  Glückauf, vol. 73, 1937, pp. 1101-1106; Coal Carbonisation, vol. 4, 1938, p. 16.

     A general survey of the use of semicoke is followed by notes on the results of various large-scale trials, including the manufacture of synthesis gas by the Ruhrbenzin A.-G.; the direct manufacture of synthesis gas in water gas producers at the Grasbrook (Hamburg) gas works; and the manufacture of ferrosilicon, CaC₂, and other products.