1. Senior Surveyor—Laser Scanning Specialist, AAMHatch, 108 Stirling St., East Perth, WA 6000, Australia; formerly, Research Fellow, Western Australian Center for Geodesy, Curtin Univ. of Technology. E-mail: S.Gordon@aamhatch.com.au
2. Senior Lecturer, Western Australian Center for Geodesy, Curtin Univ. of Technology, GPO Box U1987, Perth, WA 6845, Australia. E-mail: D.Lichti@curtin.edu.au