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However, there is now little demand for radium, since radioisotopes such as COBALT -60 can be processed more cheaply and are more effective in most applications. secured his first radium from the Curies and by 1910 he had treated 500 cancer cases. Radium has also been employed industrially, eg, in luminous paint used on the dials of watches and instruments. isolated an oxide of a new element when working with iron ores. Marie Curie isolated radium from Austrian pitchblende ore. The Origins of the Colorado Radium Boom In 1898, Mme. Radium compounds sealed in tubes or needles were implanted in patients at cancer sites. Colorado and processed in Denver primarily for its radium content because there were very few uses for uranium during the early 20th century (Tables 1 and 2). The most important use for radium has been to destroy cancer cells.

Radium was recovered as a byproduct of uranium at the Port Hope refinery until 1953. Both mines closed in the late 1930s but were reopened in the early 1940s as sources of uranium. The high-grade pitchblende concentrates were treated at radium refineries at Oolen, Belgium, and PORT HOPE, Ont, respectively. Most of the world's radium has come from the Shinkolobwe mine, in what is now Zaire (beginning in 1921), and the Port Radium mine near Great Bear Lake in the NWT (beginning in 1933).

In the early part of the 20th century, radium was recovered from mines in Bohemia and for other mineralized deposits in Australia, England, the Malagasy Republic, Portugal, the USSR and the Republic of South Africa. The usefulness of radium as a treatment for certain malignancies was soon recognized. In 1902, Marie Currie isolated the first pure salt of radium (radium chloride) and in 1910, she and A. Bémont, who chemically treated pitchblende, a uranium ore obtained as a byproduct from the Joachimsthal silver mine in Bohemia.

It was discovered in 1898 by Pierre and Marie Curie and G. As she was born outside France, there were rumors that she was Jewish and she was denied entry into the French Academy of Sciences. Radium emits alpha, beta, and gamma rays and produces neutrons when mixed with beryllium. It exhibits luminescence and is carmine red in flames. This pure alkaline earth metal is bright white in color but turns black when exposed to air. Despite her genius, Marie was constantly under the scanner. Radium was discovered in 1898 and isolated in 1911 by Madame Curie. Radium (Ra) is a rare radioactive metal found with naturally occurring URANIUM (about 1 part radium to 3 million parts uranium). By 1910, she had successfully isolated radium for the first time.