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.

From the discovery of gravity to the first mission to defend Earth from an asteroid, here are the most important physics ...

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 ...

This is joined by another marker that is a combination of Uraninite, Pitchblende, Carnotite, Gummit, and Yellowcake. Interesting story, Tritium is highly regulated in this country but it is ...

Working with her husband Pierre, Marie Curie was studying pitchblende, a mineral from North Bohemia that contained uranium. Pitchblende was mined near what's now Jachymov in the Czech Republic, and ...

In addition to uranium and thorium, which had been discovered in 1789 and 1828, the Curies discovered polonium and radium, isolating them from the mineral pitchblende. The last, in particular ...

wrenched by such determined labor and consummate skill from tons of black shapeless pitchblende. On his return to Paris he was one day demonstrating in his lecture room with this precious tube the ...

Five years later, he reported that a sample of African pitchblende contained about 2 × 10 −10 grams of 99 Tc per kilogram of ore. In 1962, a team of French scientists confirmed Kuroda's earlier ...

The pitchblende of Bohemia led to no important results when discovered; but that of northern Canada and the great uranium deposits of Katanga are now of immense interest to the world. Time, place, ...

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When you buy through links on our articles, Future and its syndication partners may earn a commission. Physics experiments have changed the world irrevocably, altering our reality and enabling us ...