Dear Mike, Thanks a lot for the e-mail address of Al Fahey. It is appreciated highly you took the effort for notifying me. Best wishes, Pier de Groot. ************************************************************** Dr. P.A. de Groot University of the Witwatersrand Economic Geology Research Unit Department of Geology Private Bag 3 2050 Johannesburg South Africa Tel. +27 11 7162564 Fax. +27 11 3391697 E-mail <[log in to unmask]> Visit the combined HOME-PAGE of EGRU-Geology on the Internet: http://www.wits.ac.za/science/geology/1stpage.htm **************************************************************