Sentences with phrase «uranium ore contained»

In the United States in the late 1950s, for example, uranium ore contained roughly 0.28 percent uranium oxide.

Not exact matches

Visible from space, the Bayan — Obo iron mine in Inner Mongolia is the world's largest source of rare earths, and the Chinese companies supplying them employ acid to dissolve them out of ore rock that often also contains radioactive elements like thorium, radium or even uranium.

The two started examining minerals containing uranium and pitchblende, a uranium - rich ore, and realized the latter was four times more radioactive than pure uranium.

For ores that contain even less concentrated uranium — McArthur River is the most concentrated active mine — the proportion of waste in radium and other radioactive elements (as well as toxic heavy metals such as arsenic and mercury) is even higher — and McArthur River's uranium is much less concentrated than the mines of the past like nearby Rabbit Lake or Shinkolobwe in the Democratic Republic of the Congo's Katanga Province.

The data show that uranium ore deposits yet to be mined contain more than 3,500,000 tonnes («tonnes,» or «metric tons,» weigh 1000 kilograms or 2200 pounds, 10 % more than a 2000 pound «ton») of uranium.

One ton of uranium ore can contain as little as 0.14 grams of radium.