11. It was discovered in the uranium ore in 1913 by Fajans and G�hring. 12. People used stones striped with yellow uranium ore to build homes. 13. For uranium ores , the lixiviant may be acid or sodium bicarbonate. 14. The enrichment-pricing dispute is compounded by one involving world trade in uranium ore . 15. Depleted-uranium is 40 percent less radioactive than natural uranium ore , military officials say. 16. However trace amounts occur naturally as a product of transmutation reactions in uranium ores . 17. The resulting Oyler Mine in Grand Wash produced uranium ore . 18. The ship contains 50 tons of uranium ore concentrate, the purest form of uranium. 19. The mill had the capacity to process 210 tons of uranium ore per day. 20. It is present in uranium ores in concentrations of 100 micrograms per metric ton.
