Radium chemicals and cause radioluminescence. Radium, in the form of radium chloride, was discovered by Marie and Pierre Curie in 1898. They extracted the radium compound from uraninite and published the discovery at the French Academy of Sciences five days later. Radium was isolated in its metallic state by Marie Curie and André-Louis Debierne through the electrolysis of radium chloride in 1911. In nature, radium is found in uranium and (to a lesser extent) thorium ores in trace amounts as small as a seventh of a gram per ton of uraninite. Radium is not necessary for living organisms, and adverse health
Radium King King" was the first vessel to cross Great Slave Lake—arriving in Yellowknife on June 8. While the lake's ice had broken up, it hadn't moved out. Northern Transportation added additional vessels to her fleet, many of which, like the "Radium Charles" and "Radium Yellowknife" also bore the prefix "Radium", and the line was known locally as the "Radium Line". In 1956 the "Radium King" survived the explosion of mining supplies on a barge she was towing. In 1967 the boat was retired. Currently she is on display outside the Northern Life Museum in Fort Smith, Northwest Territories. The "Radium King"