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Franklin was a professor at the University of Wisconsin from 1888 to 1901 and head of the U.S. Bureau of Soils, Division of Soil Management from 1901 to 1904. He was also an inventor. Among other inventions, in 1889 he made what was the first model design for the tower silo, a cylindrical darn. Proving that these silos can reduce spoilage. Although, there are earlier recordings with the claim such as with Fred Hatch in 1873.

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The German physical chemist, Fritz Harber was a winner of the 1918 Nobel Prize for Chemistry for his successful work on nitrogen fixation. In his research of physical chemistry of flames, combustion, electrochemistry led to his third research theme in the form of a growing interest in the thermodynamics of gas reactions. Where he began realizing the potential of synthesizing ammonia gas from nitrogen and hydrogen gas for nitrogen fixation around 1904.

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Although he received his doctorate in 1898 for research in organic chemistry his interests were in metallurgist and engineering. Later helping Fritz with production of nitrogen fertilizer starting in Germany.

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in July of 1909, Fritz Haber was able to produce a continuous flow of liquid ammonia from hydrogen and nitrogen gases that were fed into a hot, pressurized iron tube over an osmium metal catalyst. later with the help of Carl Bosch this prosses was able to be produced in a large scale for world-wide use.

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Inventor of the first successful trashing machine in Schottland by 1788. This invention was later improved upon and by Josphe Pope in the 1820s that gained popularity in the US. Later by the 1830s two American inventors, John Avery and Hiram Abial Pitts, who in 1837 received a United States patent #542 for a machine that automatically threshes and separates grain from chaff.

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The Editors of Encyclopaedia Britannica. (2023a, July 31). Franklin Hiram King | Agricultural Scientist, Soil conservation & Plant Breeding. Encyclopedia Britannica. https://www.britannica.com/biography/Franklin-Hiram-King

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Meikle's machine consisted of strong drum with fixed beaters that beat rather than rubbed the grain.

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The Editors of Encyclopaedia Britannica. (2023, August 23). Carl Bosch | Nobel Prize, Haber-Bosch Process, Industrial Chemistry. Encyclopedia Britannica. https://www.britannica.com/biography/Carl-Bosch

Jensen, W. B. (2023, August 1). Fritz Haber | Biography & Facts. Encyclopedia Britannica. https://www.britannica.com/biography/Fritz-Haber

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Britannica, T. Editors of Encyclopaedia (2023, January 1). Andrew Meikle. Encyclopedia Britannica. https://www.britannica.com/biography/Andrew-Meikle

Harvesting. (n.d.). https://www.agriculturalmuseum.org/powering-inventions-exhibit/harvesting

Why did we wait so long for the threshing machine? (2021, June 29). The Roots of Progress. https://rootsofprogress.org/why-did-we-wait-so-long-for-the-threshing-machine