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unhappycamper

(60,364 posts)
6. It will be dangerous for a while; the half-life of uranium is somewhat longish:
Sun Feb 2, 2014, 06:29 AM
Feb 2014
http://en.wikipedia.org/wiki/Uranium

In nature, uranium is found as uranium-238 (99.2739–99.2752%), uranium-235 (0.7198–0.7202%), and a very small amount of uranium-234 (0.0050–0.0059%).[4] Uranium decays slowly by emitting an alpha particle. The half-life of uranium-238 is about 4.47 billion years and that of uranium-235 is 704 million years,[5] making them useful in dating the age of the Earth.

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