This report was prepared as an account of work sponsord by the United States Government. Neiter the United States nor the United States Energy Research and Development Administration, nor any of their employees, nor any of their contractors, subcontractors, or their employees, make any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness or usefulness of any information, apperatus, product or process disclosed, or represents that its use would not infringe privatly owned rights. 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 §4.00; Microfiche $2.25 October 1975 110 copies

This image is a work of a United States Department of Energy (or predecessor organization) employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain. Please note that national laboratories operate under varying licences and some are not free. Check the site policies of any national lab before crediting it with this tag. العربية ∙ English ∙ français ∙ 日本語 ∙ македонски ∙ മലയാളം ∙ Nederlands ∙ русский ∙ українська ∙ Tiếng Việt ∙ 简体中文 ∙ 繁體中文 ∙ +/−

This image is a work of a United States Department of Energy (or predecessor organization) employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain. Please note that national laboratories operate under varying licences and some are not free. Check the site policies of any national lab before crediting it with this tag. العربية ∙ English ∙ français ∙ 日本語 ∙ македонски ∙ മലയാളം ∙ Nederlands ∙ русский ∙ українська ∙ Tiếng Việt ∙ 简体中文 ∙ 繁體中文 ∙ +/−