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Copyright This publication was made possible by grant number OH008307 from the National Institute for Occupational Safety and Health (NIOSH). The contents are solely the responsibility of the authors and do not necessarily represent the official views of NIOSH. CPWR – the research and training arm of the Building and Construction Trades Department, AFL-CIO – is uniquely situated to serve workers, contractors, and the scientific community. A major CPWR activity is to improve safety and health in the construction industry. This volume is part of that effort.© 2008, CPWR – The Center for Construction Research and Training. All rights reserved. To obtain individual or bulk-order copies of this book or permission to use portions in publications, contact Publications, CPWR – The Center for Construction Research and Training, Suite 1000, 8484 Georgia Ave., Silver Spring, MD 20910, 301-578-8500. This chart book is posted at www.cpwr.com and www.elcosh.org. Address correspondence to: Xiuwen (Sue) Dong, Dr.P.H., at CPWR – The Center for Construction Research and Training, 8484 Georgia Ave., Suite 1000, Silver Spring, MD 20910. ISBN: 978-0-9802115-0-4 Library of Congress Control Number: 2008921319 This paper appears in the eLCOSH website with the permission of the author and/or copyright holder and may not be reproduced without their consent. eLCOSH is an information clearinghouse. eLCOSH and its sponsors are not responsible for the accuracy of information provided on this web site, nor for its use or misuse. |