Ohio (AP) - Ohio has been chosen over Kentucky for a $1.5 billion plant that will use updated technology to enrich uranium for power plant reactors, the company building the plant announced Monday. The facility at the shuttered Portsmouth Gaseous Diffusion Plant in Piketon, which previously had been used for uranium processing, will employ 500 and will be operating by the end of the decade, USEC Inc. President Nick Timbers said. Sen. George Voinovich said the ``new plant is great news for Piketon and Ohio.'' Officials said the decision means that billions of dollars will be invested in the state....