This report was prepared as an account of work sponsored by the United Stata Government. Neither the United States nor the United Stata Department of Energy, nor any of theiremployees, nor any ofthcir contractors, subcontractors, or their employees. m a k e any warranty, express or implied. or assuma any legal liability or responsibility for the accuracy, completeness or usefulness of MY information, apparatus, product or procas disclosed. or represents that its usc would not infringe privately owned rights.