This report has been reviewed in draft form by individuals chosen for their diverse perspectives and technical expertise, in accordance with procedures approved by the NRC’s Report Review Committee. The purpose of this independent review is to provide candid and critical comments that will assist the institution in making its published report as sound as possible and to ensure that the report meets institutional standards for quality and objectivity. The review comments and draft manuscript remain confidential to protect the integrity of the process.

We wish to thank the following individuals for their review of this report:

• Madhav Manjrekar, Vestas Technology, Houston, Texas
• David Miller, Idaho National Laboratory, Idaho Falls
• Kenneth Moloy, E. I. du Pont de Nemours and Company, Wilmington, Delaware
• Jonathan Price, Nevada Bureau of Mines and Geology, Reno

Although the reviewers listed above have provided many constructive comments and suggestions, they were not asked to endorse the content of the report, nor did they see the final draft before its release. The review of this report was overseen by Ann Maest, Stratus Consulting, Boulder, Colorado, appointed by the National Research Council, she was responsible for making certain that an independent examination of this report was carried out in accordance with institutional procedures and that all review comments were carefully considered. Responsibility for the final content of this report rests entirely with the author(s).