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Report Made to the Hon. Thomas Corwin, Secretary of the Treasury, Professor R. S. McCulloh, of His Operations at the Mint of the United States, in ... Gold by His Zinc Method (Classic Reprint) - Softcover
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Excerpt from Report Made to the Hon. Thomas Corwin, Secretary of the Treasury, Professor R. S. McCulloh, of His Operations at the Mint of the United States, in Refining California Gold by His Zinc Method
I have set forth these facts, because it should be understood, that my preliminary trials were made without reference to the questions of comparative time or economy of labor and materials.
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Report Made to the Hon. Thomas Corwin, Secretary of the Treasury, Professor R.
Print-on-DemandAnbieter: Forgotten Books, London, Vereinigtes Königreich
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Paperback. Zustand: New. Print on Demand. This book presents the findings of the author's 1851 trial of a new method of refining gold using zinc. The author's method was compared with the silver process commonly used at the time. Conducted in the Philadelphia mint, the trial was overseen by the institution's director with the approval of the treasury department. The author's method of refining was found to be economical in terms of materials and labor, requiring less labor and fewer costly materials than the silver refining method. The author's method was also found to produce a refined gold of excellent quality, producing well-formed ingots and coins. The author argues that their method would save the nation money and waste in the refining process and would enhance the nation's wealth and industry. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9780656851287_0
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Report Made to the Hon Thomas Corwin, Secretary of the Treasury, Professor R S McCulloh, of His Operations at the Mint of the United States, in Gold by His Zinc Method Classic Reprint
Anbieter: PBShop.store US, Wood Dale, IL, USA
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9780656851287
Beispielbild für diese ISBN
Report Made to the Hon Thomas Corwin, Secretary of the Treasury, Professor R S McCulloh, of His Operations at the Mint of the United States, in Gold by His Zinc Method Classic Reprint
Anbieter: PBShop.store UK, Fairford, GLOS, Vereinigtes Königreich
Verkäuferbewertung 5 von 5 Sternen
PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9780656851287
Neu kaufen
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