A US court has rejected a plea of some survivors of the 1984 Bhopal gas tragedy for a clean-up of the affected chemical plant site, citing "sensitive and severe difficulties" of undertaking the exercise in a foreign land. In doing so the US court of appeals in New York, headed by Chief Judge Edward R. Korman, affirmed an October judgement of district judge John F Keenan turning down the plea of one Haseena Bi and 14 others for damages against Union Carbide. . . . The district court properly denied the motion for class certification because the only relief sought by the class related to the claims for relief that had been dismissed as impracticable, Korman ruled.