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Copper for America

Copper for America

Charles K. Hyde

University of Arizona Press
2016
nidottu
This comprehensive history of copper mining tells the full story of the industry that produces one of America's most important metals. The first inclusive account of U.S. copper in one volume, Copper for America relates the discovery and development of America's major copper-producing areas—the eastern United States, Tennessee, Michigan, Montana, Arizona, New Mexico, Nevada, Utah, and Alaska—from colonial times to the present. Starting with the predominance of New England and the Middle Atlantic states in the early nineteenth century, Copper for America traces the industry's migration to Michigan in mid-century and to Montana, Arizona, and other western states in the late nineteenth century. The book also examines the U.S. copper industry's decline in the twentieth century, studying the effects of strong competition from foreign copper industries and unforeseen changes in the national and global copper markets. An extensively documented chronicle of the rise and fall of individual mines, companies, and regions, Copper for America will prove an essential resource for economic and business historians, historians of technology and mining, and western historians.
Copper Script

Copper Script

Kj Charles

Kjc Books
2025
pokkari
Detective Sergeant Aaron Fowler of the Metropolitan Police doesn't count himself a gullible man. When he encounters a graphologist who deduces people's lives and personalities from their handwriting with impossible accuracy, he needs to find out how the trick is done. Even if that involves spending more time with the intriguing, flirtatious Joel Wildsmith than feels quite safe.Joel's not an admirer of the police, but DS Fowler has the most irresistible handwriting he's ever seen. If the policeman's tests let him spend time unnerving the handsome copper, why not play along?But when Joel looks at a powerful man's handwriting and sees a murderer, the policeman and the graphologist are plunged into deadly danger. Their enemy will protect himself at any cost--unless the sparring pair can come together to prove his guilt and save each other.
Superconducting Characteristics of Thin Tin Films in Contact With Copper Films

Superconducting Characteristics of Thin Tin Films in Contact With Copper Films

Charles Ray Wyatt Raymond E. Hannum

Hassell Street Press
2021
nidottu
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface.We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Secular and Cyclical Movement in the Production and Price of Copper

Secular and Cyclical Movement in the Production and Price of Copper

Charles Louis Knight

University of Pennsylvania Press
1935
sidottu
This book is a volume in the Penn Press Anniversary Collection. To mark its 125th anniversary in 2015, the University of Pennsylvania Press rereleased more than 1,100 titles from Penn Press's distinguished backlist from 1899-1999 that had fallen out of print. Spanning an entire century, the Anniversary Collection offers peer-reviewed scholarship in a wide range of subject areas.
Use of the Differential Reflectometer in the Study of Thin Film Corrosion Products on Copper
Abstract: An investigation was undertaken to examine the feasibility of using the technique of differential ref lectometry to identify and study thin film corrosion products on metal substrates. Differential ref lectometry is a form of modulation spectroscopy which measures the normalized difference in reflectivity between two samples, or two adjacent areas of the same sample. In these experiments, one half of each sample was protected by an insulating lacquer while the other half was allowed to form a thin film corrosion product. When the lacquer was subsequently removed, the normalized difference in reflectivity as a function of wavelength was measured over the range A = 800 nm to 200 nm (1.55 eV to 6.20 eV) . The use of a transparent lacquer permits monitoring of the film in situ. Because of the differential nature of the technique, the effect of the metal substrate is subtracted out, so that the resulting differential reflectogram is related to the absorption spectrum of the corrosion product. The similarity in the structure between reflection, absorption, and differential reflectivity spectra substantiates this viewpoint. In these experiments, copper was chosen as the metal on which the thin film corrosion products were grown. Characteristic spectra for the copper oxides Cu 0 and CuO were obtained, and were used to help define the boundaries of the regions of stability of the copper-water Pourbaix diagram. In addition, the evolution with time of a Cu ? film was monitored in situ. It was established that in the thickness range of o passive and semipassive films (d = to 200 A) differential ref lectometry produces a unique spectrum for each corrosion product, and that the intensity of the structure in the differential reflectogram is related to the thickness of the film. A method is described for calculating the differential ref lectograms of thin film corrosion products for various film thicknesses if the optical constants of the film and substrate are known. Sample spectra are calculated for various thicknesses of a CuO film on a copper substrate. These spectra compare favorably with experimental curves. Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Use of the Differential Reflectometer in the Study of Thin Film Corrosion Products on Copper" by Charles William Shanley, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.
Use of the Differential Reflectometer in the Study of Thin Film Corrosion Products on Copper
Abstract: An investigation was undertaken to examine the feasibility of using the technique of differential ref lectometry to identify and study thin film corrosion products on metal substrates. Differential ref lectometry is a form of modulation spectroscopy which measures the normalized difference in reflectivity between two samples, or two adjacent areas of the same sample. In these experiments, one half of each sample was protected by an insulating lacquer while the other half was allowed to form a thin film corrosion product. When the lacquer was subsequently removed, the normalized difference in reflectivity as a function of wavelength was measured over the range A = 800 nm to 200 nm (1.55 eV to 6.20 eV) . The use of a transparent lacquer permits monitoring of the film in situ. Because of the differential nature of the technique, the effect of the metal substrate is subtracted out, so that the resulting differential reflectogram is related to the absorption spectrum of the corrosion product. The similarity in the structure between reflection, absorption, and differential reflectivity spectra substantiates this viewpoint. In these experiments, copper was chosen as the metal on which the thin film corrosion products were grown. Characteristic spectra for the copper oxides Cu 0 and CuO were obtained, and were used to help define the boundaries of the regions of stability of the copper-water Pourbaix diagram. In addition, the evolution with time of a Cu ? film was monitored in situ. It was established that in the thickness range of o passive and semipassive films (d = to 200 A) differential ref lectometry produces a unique spectrum for each corrosion product, and that the intensity of the structure in the differential reflectogram is related to the thickness of the film. A method is described for calculating the differential ref lectograms of thin film corrosion products for various film thicknesses if the optical constants of the film and substrate are known. Sample spectra are calculated for various thicknesses of a CuO film on a copper substrate. These spectra compare favorably with experimental curves. Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Use of the Differential Reflectometer in the Study of Thin Film Corrosion Products on Copper" by Charles William Shanley, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.