Search Results - Obert, Leonard, 1906-

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  1. 1
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    Measurement of pressures on rock pillars in underground mines. Part I / by Leonard Obert. by Obert, Leonard, 1906-

    Published 1939
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  2. 2
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    Seismic methods of detecting and delineating subsurface subsidence / by Leonard Obert and Wilbur I. Duvall. by Obert, Leonard, 1906-

    Published 1961
    Government Document Book

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  3. 3
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    Design of underground openings in competent rock / by Leonard Obert, Wilbur I. Duvall, and Robert H. Merrill. by Obert, Leonard, 1906-

    Published 1960
    Government Document Book

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  4. 4
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    Borehole deformation gage for determining the stress in mine rock / by Leonard Obert, Robert H. Merrill, and Thomas A. Morgan. by Obert, Leonard, 1906-

    Published 1962
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  5. 5
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    Triaxial method for determining the elastic constants of stress relief cores / by Leonard Obert. by Obert, Leonard, 1906-

    Published 1964
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  6. 6
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    Measurement of pressures on rock pillars in underground mines. Part II / by Leonard Obert. by Obert, Leonard, 1906-

    Published 1940
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  7. 7
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    Use of subaudible noises for the prediction of rock bursts. Part II / by Leonard Obert and Wilbur I. Duvall. by Obert, Leonard, 1906-

    Published 1942
    Online Access
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  8. 8
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    Standardized tests for determining the physical properties of mine rock / by Leonard Obert, S.L. Windes, and Wilbur I. Duvall. by Obert, Leonard, 1906-

    Published 1946
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  9. 9
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    Microseismic method of predicting rock failure in underground mining. Part II, Laboratory experiments / by Leonard Obert and Wilbur Duvall. by Obert, Leonard, 1906-

    Published 1945
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  10. 10
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    Generation and propagation of strain waves in rock / by Leonard Obert and Wilbur I. Duvall. by Obert, Leonard, 1906-

    Published 1950
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  11. 11
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    Use of subaudible noises for the prediction of rock bursts. Part II / by Leonard Obert and Wilbur I. Duvall. by Obert, Leonard, 1906-

    Published 1942
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  12. 12
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    Microseismic method of predicting rock failure in underground mining. Part I, General method / by Leonard Obert and Wilber [sic] Duvall. by Obert, Leonard, 1906-

    Published 1945
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  13. 13
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    Oil-Shale mine, Rifle, Colo. : a review of design factors / by Leonard Obert and Robert H. Merrill. by Obert, Leonard, 1906-

    Published 1958
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  14. 14
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    A gage and recording equipment for measuring dynamic strain in rock / by Leonard Obert and Wilbur I. Duvall. by Obert, Leonard, 1906-

    Published 1949
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  15. 15
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    Underground borate mining, Kern County, Calif. / by Leonard Obert and Albert E. Long. by Obert, Leonard, 1906-

    Published 1962
    Government Document Microfilm Book

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  16. 16
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    Rock mechanics and the design of structures in rock / [by] Leonard Obert [and] Wilbur I. Duvall. by Obert, Leonard, 1906-

    Published 1967
    Book

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  17. 17
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    An inexpensive triaxial apparatus for testing mine rock / by Leonard Obert. by Obert, Leonard, 1906-

    Published 1963
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  18. 18
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    Creep in model pillars / by Leonard Obert. by Obert, Leonard, 1906-

    Published 1965
    Government Document Book

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  19. 19
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    Micro-seismic method of determining the stability of underground openings / by Leonard Obert and Wilbur I. Duvall. by Obert, Leonard, 1906-

    Published 1957
    Government Document Book

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  20. 20
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    Effects of stress relief and other changes in stress on the physical properties of rock / by Leonard Obert. by Obert, Leonard, 1906-

    Published 1962
    Government Document Book

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