Radium chloride radium chloride is weakly paramagnetic with a magnetic susceptibility of 1.05. It also differs from barium chloride by the flame color, which is red as opposed to green for barium chloride. Radium chloride is still used for the initial stages of the separation of radium from barium during the extraction of radium from pitchblende. The large quantities of material involved (tonnes of ore for milligrams of radium) favour this less costly (but less efficient) method over those based on radium bromide or radium chromate (used for the later stages of the separation). It was also used in medicine to produce
Radium King Radium King The Radium King was built in 1937 to haul ore on the Mackenzie River, and her tributaries. This included uranium used in the US atom bombs of World War II. Later in her active career she hauled barges on Great Slave Lake. The "Radium King", and a sister ship, the "Radium Queen", were built in the Manseau shipyards in Montreal. They were then disassembled and the pieces were loaded on flatcars for shipment by railroad to Waterways, Alberta, which was then the northern terminus of the North American railway grid, to be reassembled and launched on the Mackenzie