Hi Poh - Plumbum is the original Latin term for Lead and hence where the symbol Pb is derived. Argentum may be Latin for a common substance too but it was also a rock group in the early 1970's. Phil Zarrow ITM, Inc. *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************