DENVER, Col., May 20. -- What is regarded as the richest known deposit of pitchblende, from which radium is obtained, has been discovered in Colorado. L.G. Nesmith, a mine worker, is the owner.

THE source from which radium is obtained is the mineral pitchblende. This mineral occurs in veins, like the majority of useful metals; I may refer particularly to the mineral veins of Cornwall ...

As plans were being drawn for a Radium Institute, Pierre Curie (a professor and man of equal genius) was run over and killed ...

J. Traill and W. B. McClelland of the Department of Mines at Ottawa. On account of the high-grade character of the pitchblende ores from the Great Bear Lake area, and partly because of the ...