Some articles on uranium:
... and early 1960s and by France into the 1970s and 1980s spread a significant amount of fallout from uranium daughter isotopes around the world ... Uranium miners have a higher incidence of cancer ... An excess risk of lung cancer among Navajo uranium miners, for example, has been documented and linked to their occupation ...
Famous quotes containing the word grade:
“Life begins at sixat least in the minds of six-year-olds. . . . In kindergarten you are the baby. In first grade you put down the baby. . . . Every first grader knows in some osmotic way that this is real life. . . . First grade is the first step on the way to a place in the grown-up world.”
—Stella Chess (20th century)