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  1. THE USE OF PENNSYLVANIA COALS IN LOW BTU GASIFICATION PROCESSES - A PRELIMINARY STUDY -

    Resource Type: Report
    Creator: Spackman, W., Davis, A., and Walker, P. L., Jr.
    Keyword: mineral
    Object Type: GenericWork
    Date Uploaded: 2016-07-27T19:12:03Z
  2. THE NATURE AND OCCURRENCE OF ASH FORMING MINERALS IN ANTHRACITE

    Resource Type: Report
    Creator: Spackman, W. and Moses, R. G.
    Keyword: mineral
    Object Type: GenericWork
    Date Uploaded: 2016-07-27T18:38:28Z
  3. Report of Research on Pennsylvania's Coal Resources IPR-19

    Resource Type: Report
    Creator: C.J. Zink, H.B. Charmbury, Joseph Kershetsky, R.P. Aikman, John Todhunter, G.L. Barthauer, John Seddon, William Sturm, M.E. Bell, C.L. Hosler, E.F. Osborn, R.Stefanko, W. Spackman, P.L. Walker, Jr., and H.L. Lovell
    Keyword: Coal Research Board and Coal Resources
    Publisher: College of Mineral Industries and Pennsylvania State University
    Object Type: GenericWork
    Date Uploaded: 2015-11-11T21:08:44Z