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Herbert Hoover
Herbert Hoover was the 31st president of the United States and also an accomplished author. Before his presidency, he wrote several books on economics and politics, including "American Individualism," which reflected his belief in self-reliance and limited government intervention. His book "The Challenge to Liberty" criticized the rise of totalitarian regimes and defended democratic values during the 1930s. Hoover also wrote extensively after his presidency, including his memoirs, "The Memoirs of Herbert Hoover," which chronicled his life and political career.
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Herbert Hoover
CHAPTER I. Valuation of Copper, Gold, Lead, Silver, Tin, and Zinc Lode Mines.DETERMINATION OF AVERAGE METAL CONTENT; SAMPLING, ASSAY PLANS, CALCULATIONS OF AVERAGES, PERCENTAGE OF ERRORS IN ESTIMATE FROM SAMPLING.The following discussion is limited to in situ deposits of copper, gold, lead, silver, tin, and zinc. The valuation of alluvial deposits, iron, coal, and other mines is each a special science...
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Herbert Hoover
To the Senate and House of Representatives: The Constitution requires that the President "shall, from time to time, give to the Congress information of the state of the Union, and recommend to their consideration such measures as he shall judge necessary and expedient." In complying with that requirement I wish to emphasize that during the past year the Nation has continued to grow in strength;...
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