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Uranium was discovered in 1789 by Martin Heinrich Klaproth, a German chemist. Klaproth named Uranium in tribute to the newly discovered planet "Uranus". Klaproth was experimenting with pitchblende ore, and extracted from it uranium dioxide, which he thought was pure uranium. It was later discovered that pure uranium had to be broken down more.

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uranium is an actinide metal. Its melting point is 1,135 degrees celsius. Boiling point is 4,131 degrees celsius. Its Density is 18.95 grams. It makes up about .00018% of earth's crust. It is a solid at room temperature

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The Navajo mines are Uranium mines in the Navajo reserve. In WWII the U.S. mined on their land for the Uranium to make bombs, once the war was over they exploited and abandoned them. The environmental effects are are still controversial today.

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https://www.youtube.com/watch?v=2ANI6oj8p2M

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Uranium's symbol is U. It has an atomic number (protons) of 92 and an atomic mass of 238.02891, which means about 146 neutrons. In the United States, Uranium reserves can be found in Arizona, Colorado, Texas, and Utah. Although other mines are also in Wyoming and new Mexico. It is often found in the form of pitchblende.

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Arizona is one of the many places Uranium is mined. This is a mine in the grand canyon.

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http://www.earthtimes.org/newsimage/uranium-mining-power-weapons_20312.jpg

http://d.stockcharts.com/img/articles/2017/04/1491859507173593538089.png

https://upload.wikimedia.org/wikipedia/commons/c/cf/Martin_Heinrich_Klaproth.jpg

https://i.ytimg.com/vi/sLkF_l9n1CM/hqdefault.jpg

https://www.orau.org/ptp/collection/consumer%20products/vaselineuv.jpg

https://i.ytimg.com/vi/2ANI6oj8p2M/hqdefault.jpg

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http://www.armz.ru/eng/uranium_mining/types_and_properties/physical_properties_of_uranium/

https://education.jlab.org/itselemental/ele092.html

http://www.rsc.org/periodic-table/element/92/uranium

http://www.theupa.org/uranium_in_america/

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Pure uranium is found with three isotopes; Uranium-234, Uranium-235, and Uranium 238. Uranium is toxic and radioactive, therefore it is used for nuclear weapons, nuclear fuel, nuclear submarines, and uranium glass, which glows bright green under ultraviolet (black) lights.