WASHINGTON, Oct. 23, 2011 / PRNewswire-USNewswire / - Ngokokuqala ngqa emlandweni, uMnyango Wezwe wase-United States (DOS) uhlaziya imithethonqubo yamazwe omhlaba engavimbela imikhiqizo equkethe imercury kufaka phakathi ukugcwaliswa kwamazinyo esiliva / amalgam, aqukethe u-50% i-mercury futhi isivele isemilonyeni yokungaphezulu Ama-122 wezigidi zaseMelika.
