|
||||||||||||||||
|
||||||||||||||||
The following HTML text is provided to enhance online readability. Many aspects of typography translate only awkwardly to HTML. Please use the page image as the authoritative form to ensure accuracy. THE NATIONAL ACADEMIES PRESS 500 Fifth Street, N.W. Washington, DC 20001 NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The members of the committee responsible for the report were chosen for their special competences and with regard for appropriate balance. The opinions, findings, and conclusions or recommendations contained in this document are those of the authors and do not necessarily reflect the views of the Office of Surface Mining Reclamation and Enforcement. Mention of trade names or commercial products does not constitute their endorsement by the U.S. government. Supported by the Office of Surface Mining Reclamation and Enforcement, Department of the Interior, under Award No. CT5-06401. International Standard Book Number 13: 978-0-309-11022-8 (Book) International Standard Book Number 10: 0-309-11022-X (Book) International Standard Book Number 13: 978-0-309-11023-5 (PDF) International Standard Book Number 10: 0-309-11023-8 (PDF) Library of Congress Control Number: 200793585 Additional copies of this report are available from the National Academies Press, 500 Fifth Street, N.W., Lockbox 285, Washington, DC 20055; (800) 624-6242 or (202) 334-3313 (in the Washington metropolitan area); Internet http://www.nap.edu Cover: Cover design by Michele de la Menardiere; upper image courtesy of Timothy J. Rohrbacher, USGS; lower image courtesy CONSOL Energy Inc. Copyright 2007 by the National Academy of Sciences. All rights reserved. Printed in the United States of America.
|
|
|||||||||||||||
