U.S. International Trade Commission has concluded that imports of urea-ammonia mixture from Russia and Trinidad and Tobago do not harm local producers. Last month, the Commerce Department approved countervailing and anti-dumping duties on UAM imports from those countries. However, the duties required an affirmative decision from the commission before they would go into effect. largest Russian supplier of UAM to the U.S. is Akron, with EuroChem in second place.