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  1. 21
    [Suspension of certain requirements relating to work on mine tunnel sites.].
    Published 1944
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  2. 22
    Suspension of annual assessment work on mining claims.
    Published 1933
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  3. 23
    Experiment station of Bureau of Mines, College Park, Md.
    Published 1931
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  4. 24
    Suspension of annual assessment work on mining claims.
    Published 1933
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  5. 25
    War Minerals Relief Statutes.
    Published 1935
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  6. 26
    Suspension of annual assessment work on mining claims.
    Published 1932
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  7. 27
    Suspension of annual assessment work on mining claims.
    Published 1937
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  8. 28
    Providing for the establishment and maintenance of an assay office at Helena, Mont.
    Published 1940
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  9. 29
    Suspension of annual assessment work on mining claims held by location in the United States.
    Published 1938
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  10. 30
    Insuring the preservation of technical and economic records of domestic sources of ores, of metals, and minerals.
    Published 1946
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  11. 31
    Amend the act entitled "An act to create the California Debris Commission and regulate hydraulic mining in the State of California", approved March 1, 1893, as amended.
    Published 1934
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  12. 32
    Letter from the Secretary of the Interior transmitting, pursuant to law the report of the War Minerals Relief Commission for the period from December 1, 1937 to November 30, 1939.
    Published 1940
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  13. 33
    Letter from the Secretary of the Interior transmitting, pursuant to law the report of the War Minerals Relief Commission for the period from December 1, 1939 to November 30, 1940.
    Published 1940
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  14. 34
    Use of Water by Mining Companies. hearings before the United States Senate Committee on Mines and Mining, Sixty-Ninth Congress, first session, on Jan. 4, 1926.
    Published 1926
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    Government Document eBook
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