Dear Isotopers, Some time ago someone asked about the location of AMS laboratories. I just came accross a paper by John Ruklidge (1995) that contains a list of world-wide laboratories (Analyst, vol. 120, p. 1283-1290). Best regards, Hal Karlsson Dr. Haraldur R. Karlsson Associate Professor of Geosciences Department of Geosciences Texas Tech University Box 41053 Lubbock, TX 79409, USA (806)-742-3130 office (806)-742-3112 lab (806)-742-0100 Dept. fax