Report of investigations, R. I. 4117-4128 (with omissions). 4128. Gasification of lignite and subbituminous coal, progress report for 1945-46: 1, Operation of commercial-scale pilot plant at Grand Forks, N. Dak.; 2, Comparison of small and large pilot plants; by V. F. Parry, D. C. Gernes, E. O. Wagner, J. B. Goodman, and A. W. Koth.

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