NOTICE This report was prepared as an account of work sponsored by the United States Government. Neither the United States nor the United States Departmentof Energy (DOE), nor any of their employees, nor any of their contractors, subcontractors, or their employees, makes any warranty, express or implied, or assumes anylegalliability or responsibility for the accuracy, completeness or usefulness of any information, apparatus, product or process disclosed, or represents thatits use would not infringe privately ownedrights. Printed in the United States of America Available from National Technical Information Service U.S. Department of Commerce 5285 Port Royal Road Springfield, VA 22161 Price: Printed Copy $4.50; Microfiche $3.00 August 1979 330 capies