NOTICE 1 .Ill is report was prepare d as an accoun t of work 1 sponso red by the United States Govern ment. Neither the United States nor the United States Energy Researc h and Develop ment Adminis tration, nor any of : their employ .ees, nor any of their contrac tors, subcon tractors , or their employe es, makes any warranty , express or implied, or assumes any legal I I liability or respons ibility for the accuracy , complete ness I or usefulne ss of any informa tion, apparatu s, product or process disclosed , or represe nts that its use would not infringe privatel y owned rights.