Several residents sued the companies over contamination from the site of the former Portsmouth Gaseous Diffusion Plant in Piketon and construction of a waste-disposal facility there. They seek damages and medical monitoring, and class-action status to represent nearby residents and students at a school where radioactive material was found.
In a filing this week, defendants argued the case should be dismissed because the claims weren't brought under a federal law governing liability-related matters for nuclear facilities. Those defendants include cleanup contractors and the company that ran a uranium enrichment project at the site in recent years.
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