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  1. 81
    Compendiosa demostracion de los crecidos adelantamientos, que pudiera lograr la real haciencda de su Magestad mediante la rebaja en el precio del azogue : que se consume para el laborio de las minas de este reyno ... con una previa impugnacion à las reflexiones del contador Joseph de Villa-señor y Sanchez ... Añadese un breve modo de reducir, ligar, y alear el oro, y la plata à la ley de 22. quilates ... /
    by Fabry, José Antonio
    Published 1743
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  2. 82
    An easy method of assaying and classing mineral substances : containing plain and easy instructions for any person to examine the products of his own land, or such as are obvious in excursions or travels in foreign countries, without having a complete chemical apparatus : to which is added, a series of experiments on the Fluor Spatosus, or sparry fluor abstracted from the Memoirs of the Royal Swedish Academy of Sciences for the year 1771 /
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  3. 83
    Arrest du Conseil d'Estat du roy, portant reglement pour le commerce des matieres d'or & d'argent : du 20 avril 1726.
    Published 1726
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  4. 84
    The gentleman and traders guide : containing a description and use of the newest invented instrument, ever made publick, for preventing frauds by counterfeit gold ... the instrument is neatly made in brass, and very easily portable for the pocket.
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  5. 85
    Tablas de las cuentas de valor liquido de la plata del diezmo : y del intrinseco y natural de la que se llama quintada y de la reduccion de sus leyes a la de 12. dineros ; segun las novissimas ordenanzas de Su Magestad y de los derechos que de la plata y oro se le pagan en estos reynos en conformidad de sus leyes reales y cedulas /
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  6. 86
    Description of Oregon and California : embracing an account of the gold regions : to which is added an appendix, containing descriptions of various kinds of gold, and methods of testing its genuineness.
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  7. 87
    Proporcion arithmetica-practica de la plata [y de el oro]: tablas generales, en que se demuestra el peso, y valor de la plata [y del oro] en todas leyes, reducido à las ultimas, que por la real pragmatica del año passado de 1728. se observa ... /
    by Muñoz de Amador, Bernardo
    Published 1741
    Book
  8. 88
    Sample size and meaningful gold analysis ... /
    Government Document Book
  9. 89
    Sandstone Copper Assessment of the Chu-Sarysu Basin, Central Kazakhstan /
    by Box, Stephen E.
    Published 2012
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  10. 90
    To Establish an Assay Office at Dahlonega, Lumpkin County, Ga : hearings before the United States House Committee on Coinage, Weights, and Measures, Seventy-First Congress, second session, on Apr. 2, 15, 1930.
    Published 1930
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  11. 91
    To Establish an Assay Office at Dahlonega, Ga : hearings before the United States House Committee on Coinage, Weights, and Measures, Seventieth Congress, first session, on Apr. 20, May 22, 1928.
    Published 1928
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  12. 92
    Notes on assaying and metallurgical laboratory experiments /
    Book
  13. 93
    Tests for gold and silver in shales from western Kansas /
    by Lindgren, Waldemar, 1860-1939
    Published 1902
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  14. 94
    Comparison of a wet and crucible-fire methods for the assay of gold telluride ores, with notes on the errors occurring in the operations of fire assay and parting /
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  15. 95
    Active nondestructive assay of nuclear materials : principles and applications /
    by Gozani, Tsahi
    Published 1981
    Government Document Book
  16. 96
    Heavy minerals as guides to uranium-vanadium ore deposits in the Slick Rock district, Colorado /
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  17. 97
    A geochemical study of alluvium-covered copper deposits in Pima County, Arizona /
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  18. 98
    Prospecting for uranium with car-mounted equipment /
    by Nelson, John M.
    Published 1953
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  19. 99
    The description and use of a new-invented portable instrument, for detecting frauds in base and counterfeit gold, by shewing the true weight of every piece of gold coin now current, with the quantity of gold and alloy in each, and also of adulteration, if any, it also proves the real value of rings, and other small toys made of gold. These instruments are made and sold, wholesale and retail, by John Warner, of campden.
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  20. 100
    In the press. dedicated, by permission, to His Royal Highness George Prince of Wales and Duke of Cornwall : Mineralogia cornubiensis; or, A general treatise upon minerals, mines, and mining; wherein the theory and natural history of strata, fissures, and lodes, as to their origin, matter formation, direction, inclination, interruption, elevation, and depression, are rationally accounted for. With the methods at large of discovering, working, and drawing the water of tin, copper, and lead mines. Together with the cleansing and metalizing their products; shewing each particular process for digging, raising, dressing, assaying, and smelting of ores. To which will be added, an etymological explanation of the terms and idioms of tinners: as well as those which are used among the lead mines and collieries of Great-Britain. By W. Pryce, of Redruth in Cornwall.
    by Pryce, William, 1725?-1790
    Published 1778
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