Sentences with phrase «for uranium deposits»
About 2 billion years ago, 3.7 % of all uranium worldwide would have been 235U, enough for uranium deposits to «go critical» if other factors were favorable.
http://www.creationscience.com/ Not exact matches
Its motherlode consists of extraordinarily high - grade uranium deposits in Saskatchewan: the McArthur River and Cigar Lake deposits account for roughly 80 % of its proven and probable reserves.
Analyses of thin mineral deposits partly covering painted cave areas provided minimum age estimates for the art, based on known decay rates of radioactive uranium in the rock.
They also contain deposits of opaline, a material that's very promising for uranium - series dating.
These contain traces of the radioactive elements uranium and thorium, which indicate when the deposits formed — and therefore give a minimum age for whatever lies beneath.
These contain traces of the radioactive elements uranium and thorium, which indicate when the deposits formed - and therefore give a minimum age for whatever lies beneath.
Russian UET resources with 311,000 tonnes of uranium, as well as the remaining Russia «excess» HEU with 108,000 tonnes of uranium, could continue to offset demand for primary uranium from unmined ore deposits, and could reduce the likelihood that new mines such as those proposed near Church Rock and Crownpoint in New Mexico would be mined in the future.
For comparison, the Church Rock and Crownpoint uranium deposits hold about 20,000 tonnes of uranium.
In the race for the atomic bomb in the lead up to World War II, the Allies had effectively secured most of the world uranium ore deposits under their power.