2002 Santa Fe Symposium                    Albuquerque, New Mexico / USA                                   (Finding Money in your Manufacturing System)

2002 Kraftwerks                                                         Ontario, CA / USA                                   Defect Recognition and Applied Statistics

2003 International Jewelry Symposium                 St. Petersburg, Russia                                      Applied Mathematics and Physics for the Jewelry Manufacturing Industry

2003 Santa Fe Symposium                   Albuquerque, New Mexico / USA                                          What you don't know can hurt You. (Defect Recognition and Resolution)

2003 India International Jewelry Show                             Mumbai, India                                            New Technology in the Jewelry Manufacturing Industry

2003 JEWELMART World Class International Exhibition    Gujarat, India                                       Jewelry Factory Design Considerations

2004 India International Jewelry Show                              Mumbai, India                                          Wax and Casting Defects

2005 Kraftwerks                                                          Ontario, CA / USA                                 Casting Rapid Prototype Materials / Palladium Particulars

2006 Santa Fe Symposium (20th Anniversary)  Nashville, TN / USA                                              Technical Model Making  (Mathematics of CAD Model Making)

2009 Santa Fe Symposium               Albuquerque, New Mexico / USA                                                  (Sprues, Feeders, and Risers  It's not just the size of your sprue that counts)