The Central Elections Commission on Wednesday dealt a blow to environmentalists' hopes of blocking the import of spent nuclear fuel into the country, turning down the 2.5 million signatures they collected in support of a national referendum.Nuclear Power Minister Yevgeny Adamov has been aggressively lobbying for a change in the federal law that states that Russia cannot accept foreign spent nuclear fuel for long-term storage. He argues that by changing the law, Russia could earn billions of dollars that could be put to good use.