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In August 1921, von Sochocky was forced from the presidency, and the company was renamed the United States Radium Corporation, [3] Arthur Roeder became the president of the company. [4] In Orange, where radium was extracted from 1917 to 1926, the U.S. Radium facility processed half a ton of ore per day. [3]
The Standard Chemical Company (SCC) of Canonsburg, Pennsylvania, was the first successful commercial producer of radium. SCC operated the radium refining mill from 1911 to 1922 on a 19-acre (77,000 m2) plot of land. The company supplied radium to the United States Radium Corporation for use in their watch dials. [1]
The National Radium Institute (NRI) was an organization incorporated in 1913 to extract radium from US domestic sources for use in cancer treatment and possible industrial use and in the process to develop more efficient methods of radium extraction.
Radium is a chemical element; it has symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, but it readily reacts with nitrogen (rather than oxygen) upon exposure to air, forming a black surface layer of radium nitride (Ra 3 N 2).
The company is notable for being involved in the radium poisoning of the Radium Girls. The workers in the factories were told that the radium paint was harmless. Radium's negative health effects were well-known at the time, however it was thought that small amounts of radium were not dangerous and even a cure for lack of energy. [1]
The decay-chain of uranium-238, which contains radium-226 as an intermediate decay product. 226 Ra occurs in the decay chain of uranium-238 (238 U), which is the most common naturally occurring isotope of uranium.
Radium dials are watch, clock and other instrument dials painted with luminous paint containing radium-226 to produce radioluminescence. Radium dials were produced throughout most of the 20th century before being replaced by safer tritium -based luminous material in the 1970s and finally by non-toxic, non-radioactive strontium aluminate ...
Radon-222 (222 Rn, Rn-222, historically radium emanation or radon) is the most stable isotope of radon, with a half-life of approximately 3.8 days. It is transient in the decay chain of primordial uranium-238 and is the immediate decay product of radium-226 .
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