Science: Radium in Ontario

Because radium is one of the most useful and expensive things in the world, the discovery of even a small new source is more important than the discovery of fields of gold. Last week despatches from Ontario announced that Canadian mine experts had found a. radium mine near Wilberforce. Three years ago miners in the district discovered traces of uraninite (uranium oxide) in pegmatite, a type of rock rich in valuable minerals. Where there is a uranium deposit, mine experts have learned to look for radium. Uranium, producer of radium, is constantly emitting...