Professor of Physics Chairman, The Australian Consortium for Interferometric Gravitational Astronomy (ACIGA) Director, The ANU Centre for Gravitational Physics Department Of Physics, College of Science The Australian National University Canberra 0200 Tel. 02 6125 9888 (Local), 61 2 6125 9888 (International) Fax 61 2 6125 0741 (International), 02 6125 0741 (Local) E-mail David.McClelland@anu.edu.au