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  1. 181
    Official changes in the active list of permissible explosives and blasting devices for November, 1931 /
    by Turner, Scott
    Published 1931

    Government Document Book
  2. 182
    Analytical distillation of coal tar /
    by Kester, E. B
    Published 1932

    Government Document Book
  3. 183
    Do fuses protect against methane ignitions? /

    Government Document Book
  4. 184
    A study of falls of roof and coal in mines of Lincoln County, Wyoming /
    by Tomlinson, Herbert
    Published 1932

    Government Document Book
  5. 185
    Economics of potash recovery from wyomingite and alunite /
    by Thoenen, J. R
    Published 1932

    Government Document Book
  6. 186
    Composition of the fractions of primary and high-temperature tar /
    by Kester, E. B
    Published 1932

    Government Document Book
  7. 187
    Compressed air for operating modern coal-mining equipment /
    by Currie, R. D
    Published 1932

    Government Document Book
  8. 188
    A study of falls of roof and coal in northern Colorado /
    by Tomlinson, Herbert
    Published 1933

    Government Document Book
  9. 189
    Investigations during 1932 of combustibles in manholes in Boston, Mass. /
    by Jones, G. W
    Published 1933

    Government Document Book
  10. 190
    Identification of cerussite and anglesite and flotation with galena /
    by DeVaney, F. D
    Published 1933

    Government Document Book
  11. 191
    Mining and marketing of barite /
    by Harness, Charles L
    Published 1946

    Government Document Book
  12. 192
    Storage of explosives in underground mines of the Lake Superior District /
    by Cash, Frank E
    Published 1946

    Government Document Book
  13. 193
    Wetting-agent concentration in water solution determined by the drop-number method /
    by Harmon, John P
    Published 1946

    Government Document Book
  14. 194
    Carbon dioxide content of mine-fire atmospheres as an aid when fighting metal-mine fires /
    by Ash, S. H (Simon Harry), 1889-
    Published 1950

    Government Document Book
  15. 195
    Statistical data on the mechanical cleaning of bituminous coal in the United States /
    by Anderson, Robert L
    Published 1950

    Government Document Book
  16. 196
    Ventilation-air heating plants of the Menominee Range /
    by Lewis, Walter E
    Published 1951

    Government Document Book
  17. 197
    Treatment of timber /
    by Crawford, F. S
    Published 1951

    Government Document Book
  18. 198
    Bureau of Mines approval system for respiratory protective devices /
    by Pearce, S. J
    Published 1951

    Government Document Book
  19. 199
    Froth-flotation practice in coal-preparation plants of Western Europe and Great Britain /
    by Gandrud, B. W
    Published 1951

    Government Document Book
  20. 200
    Domestic mica /
    by Gwinn, G. Richards
    Published 1951

    Government Document Book
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