thanks for the reply paul skierkowski PAUL SKIERKOWSKI OOOOO ENVIRONMENTAL SAFETY SERVICES O O UNIVERSITY OF OKLAHOMA O U O U 905 ASP AVE., ROOM 112 O U O U NORMAN, OK 73019-0420 O U O U 405-325-1015 FAX - 7238 OOUOO U U U PAUL @ESS-LAN.STUDIES.UOKNOR.EDU UUUUU