Barry Allred is an Agricultural Engineer with the USDA/ARS—Soil Drainage Research Unit. He attended Northern Illinois University, Western Michigan University, and Oklahoma State University and has B.S. and M.S. degrees in geology and a Ph.D. in biosystems engineering. His research interests include application of geophysical methods to agriculture, agricultural water recycling, and laboratory soil hydraulic/mechanical properties testing.

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Neil Anderson received his B.Sc. and M.Sc. degrees from the University of Manitoba, and his Ph.D. degree from the University of Calgary. He is currently Professor of Geophysics at the University of Missouri-Rolla and specializes in engineering and environmental geophysics. Current international projects...

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