Showing 1 - 20 results of 78 for search 'Greenwald, H. P. (Harold Putnam), 1893-', query time: 0.13s Refine Results
  1. 1
    Tests of the compressibility and bearing strength of potash salt /

    Tests of the compressibility and bearing strength of potash salt / by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1937
    Government Document Book
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  2. 2
    Experiments on strength of small pillars of coal in the Pittsburgh bed /

    Experiments on strength of small pillars of coal in the Pittsburgh bed / by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1939
    Government Document Book
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  3. 3
    Explosibility of coal dust from four mines in Utah /

    Explosibility of coal dust from four mines in Utah / by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1927
    Government Document Book
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  4. 4
    Tests on the ignition of natural gas-air mixtures by permissible explosives in the experimental coal mine.

    Tests on the ignition of natural gas-air mixtures by permissible explosives in the experimental coal mine. by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1949
    Government Document Book
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  5. 5
    Compressibility and bearing strength of coal in place : tests of lateral compression of Pittsburgh coal bed /

    Compressibility and bearing strength of coal in place : tests of lateral compression of Pittsburgh coal bed / by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1933
    Government Document Book
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  6. 6
    Explosibility of semianthracite, low-volatile bituminous coals, and medium-volatile bituminous-coal dusts /

    Explosibility of semianthracite, low-volatile bituminous coals, and medium-volatile bituminous-coal dusts / by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1940
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  7. 7
    Studies of roof movement in coal mines.

    Studies of roof movement in coal mines. by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1937
    Other Authors: “…Greenwald, H. P. (Harold Putnam), 1893-…”
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  8. 8
    Progress report : experiments on strength of small pillars of coal in the Pittsburgh bed /

    Progress report : experiments on strength of small pillars of coal in the Pittsburgh bed / by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1941
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  9. 9
    Tests of salt as a substitute for rock dust in prevention of coal-dust explosions in mines /

    Tests of salt as a substitute for rock dust in prevention of coal-dust explosions in mines / by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1940
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  10. 10
    Coal-mine ventilation factors /

    Coal-mine ventilation factors / by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1929
    Government Document Book
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  11. 11
    Notes on large-scale tests of the explosibility of coal dusts made in the United States and Great Britain /

    Notes on large-scale tests of the explosibility of coal dusts made in the United States and Great Britain / by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1939
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  12. 12
    Tests of a barrier using rock dust in paper bags /

    Tests of a barrier using rock dust in paper bags / by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1938
    Government Document Book
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  13. 13
    Laboratory testing of the inflammability of coal and other dusts conducted by the Bureau of Mines /

    Laboratory testing of the inflammability of coal and other dusts conducted by the Bureau of Mines / by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1932
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  14. 14
    Compression tests of roof-salt slabs supported by potash salt pillars /

    Compression tests of roof-salt slabs supported by potash salt pillars / by Greenwald, H. P. (Harold Putnam), 1893-

    Published 1938
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  15. 15
    Propagation of flame in mixtures of natural gas and air /

    Propagation of flame in mixtures of natural gas and air / by Coward, H. F. (Hubert Frank), Greenwald, H. P. (Harold Putnam), 1893-

    Published 1928
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  16. 16
    Coal-dust explosibility factors indicated by experimental mine investigations 1911 to 1929 /

    Coal-dust explosibility factors indicated by experimental mine investigations 1911 to 1929 / by Rice, George S. (George Samuel), 1866-1950, Greenwald, H. P. (Harold Putnam), 1893-

    Published 1929
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  17. 17
    Proceedings : fifth International Conference of Directors of Mine Safety Research /

    Proceedings : fifth International Conference of Directors of Mine Safety Research /

    Published 1950
    Other Authors: “…Greenwald, H. P. (Harold Putnam), 1893-…”
    Government Document Conference Proceeding Book
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  18. 18
    Tests with rock dust for extinguishing fire /

    Tests with rock dust for extinguishing fire / by Howarth, H. C. (Henry C.), 1879-

    Published 1927
    Other Authors: “…Greenwald, H. P. (Harold Putnam), 1893-…”
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  19. 19
    Studies of roof movement in coal mines.

    Studies of roof movement in coal mines. by Maize, Earl R.

    Published 1939
    Other Authors: “…Greenwald, H. P. (Harold Putnam), 1893-…”
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  20. 20
    Experiments to determine the minimum amount of coal dust required for propagation of a mine explosion /

    Experiments to determine the minimum amount of coal dust required for propagation of a mine explosion / by Rice, George S. (George Samuel), 1866-1950

    Published 1931
    Other Authors: “…Greenwald, H. P. (Harold Putnam), 1893-…”
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