
James "Scott" Groenier—Project
Leader
Stan Lebow—Research Scientist, Forest Products Laboratory

Cover photo—An elevated walkway in Palfrey’s
Glen State Natural
Area near Merrimac, WI.
The following information was obtained from the U.S. Department of Agriculture (USDA) Forest Service Forest Products Laboratory, National Wood in Transportation Program; American Wood-Preservers' Association; Western Wood Preservers Institute; and the U.S. Environmental Protection Agency. The authors thank these organizations for their help in providing information for this report.
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