Authorities in Bhopal, India, said Thursday nearly 3,000 people had died in the 1984 disaster there and estimated that more than 1,700 more will die over the next seven years as a result of the gas leak. The figures were contained in a new relief plan that will provide $285 million in economic and medical aid to victims of toxic methyl-isocyanate gas released by a plant owned by a Union Carbide Corp. subsidiary. The plan, released by the government of central Madhya Pradesh state, said 2,998 people had died in the world's worst industrial accident. Previous estimates had put the death toll at 2,800.