PNL-3213 UC-41 NOTICE This report was prepared as an account of work sponsored by the United States Government. Neither the United States nor the Department of Energy, nor any of their employees, nor any of their contractors, subcontractors, or their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness or usefulness of any information, apparatus, product or proce~s disclosed, or represents that its use would not infringe privately owned rights. The views, opinions and conclusions contained in this report are those of the contractor and do not necessarily represent those of the United Sta'tes Government or the United States Department of Energy.