New York 1941

Author: Luca Giribone
ISBN: 9788893840620
Size: 70.39 MB
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William Tecumseh Sherman And The Settlement Of The West

Author: Robert G. Athearn
Publisher: University of Oklahoma Press
ISBN: 9780806127699
Size: 78.21 MB
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William Tecumseh Sherman is known primarily for having cut a swath of destruction through Georgia and the Carolinas during the Civil War. From the fame of these years, however, he moved into an eighteen-year phase of “insuring the tranquility” of the vast region of the American West. As commander of the Division of the Missouri from 1865 to 1869 and General of the Army of the United States under President Grant from 1869 to 1883, Sherman facilitated expansion and settlement in the West while suppressing the raids of the Cheyenne, Arapahoe, Kiowa, Comanche, and Crow Indians. Robert G. Athearn explores Sherman’s and his army’s roles in the settling of the West, especially within the broad framework of railroad construction, Indian policy, political infighting, and popular opinion.

Spies In The Congo

Author: Susan Williams
Publisher: Hachette UK
ISBN: 1610396553
Size: 79.48 MB
Format: PDF, Mobi
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In the 1940s, the brightest minds of the United States and Nazi Germany raced to West Africa with a single mission: to secure the essential ingredient of the atomic bomb—and to make sure nobody saw them doing it Albert Einstein told President Franklin D. Roosevelt in 1939 that the world's only supply of uniquely high-quality uranium ore—the key ingredient for bomb— could be found in the Katanga province of the Belgian Congo at the Shinkolobwe Mine. Once the US Manhattan Project was committed to developing atomic weapons for the war against Germany and Japan, the rush to procure this uranium became a top priority—one deemed “vital to the welfare of the United States.” But covertly exporting it from Africa posed a major risk: the ore had to travel via a spy-infested Angolan port or 1,500 miles by rail through the Congo, and then be shipped by boats or Pan Am Clippers to safety in the United States. It could be poached or smuggled at any point on the orders of Nazi Germany. To combat that threat, the US Office of Strategic Services sent in a team of intrepid spies, led by Wilbur Owings “Dock” Hogue, to be America's eyes and ears and to protect its most precious and destructive cargo. Packed with newly discovered details from American and British archives, this is the gripping, true story of the unsung heroism of a handful of good men—and one woman—in colonial Africa who risked their lives in the fight against fascism and helped deny Hitler his atomic bomb.

World War Ii The Definitive Encyclopedia And Document Collection 5 Volumes

Author: Spencer C. Tucker
Publisher: ABC-CLIO
ISBN: 1851099697
Size: 61.14 MB
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With more than 1,700 cross-referenced entries covering every aspect of World War II, the events and developments of the era, and myriad related subjects as well as a documents volume, this is the most comprehensive reference work available on the war. • Provides a clear understanding of the causes of World War II, reaching back to World War I and the role of the Western democracies in its origin • Examines home front developments in major countries during the war, such as race and gender relations in the United States • Recognizes the important roles played by women in the war and describes how the United States mobilized its economy and citizenry for total war • Discusses the Holocaust and establishes responsibility for this genocide • Details the changing attitudes toward the war as expressed in film and literature

Early American Proverbs And Proverbial Phrases

Author: Bartlett Jere Whiting
Publisher: Harvard University Press
ISBN: 9780674219816
Size: 79.15 MB
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Mr. Whiting has combed all the obvious sources and hundreds of out-of-the-way publications of local journals and historical societies. This body of material, "because it covers territory that has not been extracted and compiled in a scholarly way before, can justly be said to be the most valuable of all those that Whiting has brought together," according to Albert B. Friedman. "What makes the work important is Whiting's authority: a proverb or proverbial phrase is what BJW thinks is a proverb or proverbial phrase. There is no objective operative definition of any value, no divining rod; his tact, 'feel,' experience, determine what's the real thing and what is spurious."

Materials Characterisation And Mechanism Of Micro Cutting In Ultra Precision Diamond Turning

Author: Sandy Suet To
Publisher: Springer
ISBN: 3662548232
Size: 24.12 MB
Format: PDF, ePub
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This book presents an in-depth study and elucidation on the mechanisms of the micro-cutting process, with particular emphasis and a novel viewpoint on materials characterization and its influences on ultra-precision machining. Ultra-precision single point diamond turning is a key technology in the manufacture of mechanical, optical and opto-electronics components with a surface roughness of a few nanometers and form accuracy in the sub-micrometric range. In the context of subtractive manufacturing, ultra-precision diamond turning is based on the pillars of materials science, machine tools, modeling and simulation technologies, etc., making the study of such machining processes intrinsically interdisciplinary. However, in contrast to the substantial advances that have been achieved in machine design, laser metrology and control systems, relatively little research has been conducted on the material behavior and its effects on surface finish, such as the material anisotropy of crystalline materials. The feature of the significantly reduced depth of cut on the order of a few micrometers or less, which is much smaller than the average grain size of work-piece materials, unavoidably means that conventional metal cutting theories can only be of limited value in the investigation of the mechanisms at work in micro-cutting processes in ultra-precision diamond turning.