Iwan Wasterlund, Ph.D. is a retired Professor in Forest Technology (1995-2001), Olasgarden Forest and Roads, Savar, Sweden. He is the former President of ISTVS on the FAO/ECE expert team on soil damage (approximately 300 members) and has been the chairman of an ECE/FAO/ILO team of specialists. Dr. Wasterlund has been a referee on approximately 150 papers, including Silva Fennica, Terramechanics, Forest Ecological Management. He has produced almost 100 Master thesis and 10 doctorate dissertations.