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At Washington University (St. Louis) on October 30, 1999, Attendees of the 10th annual Isotopic Anomalies Workshop sponsored jointly by Clemson University and Washington University. Front: Tom Bernatowicz, Brad Meyer, Ernst Zinner, Donald Clayton, Bob Walker, Frank Podosek; Second row inludes Sachiko Amari (behind Meyer) and Roy Lewis (Chicago, behind Clayton), Tyrone Daulton and Alex Meshik; Third row includes from left Scott Messenger, Sanjib Gupta (Clemson, 2nd), Larry Nittler (3rd), Bob Nichols (4th), Roberto Gallino (Torino, peeking behind Lewis,5th), and invited Chicago colleagues Andrew Davis and Robert N. Clayton (6 and 7). Conceived of by Walker, Zinner and Clayton, this series began at Clemson University in 1990 (see photos on this web site) and featured alternate annual assemblies in Clemson and in St. Louis. Its older traditions go back to the first workshop ever on the topic of isotopic anomalies at Gregynog, Wales, in 1976. That was also organized by Clayton and may be found on this site. During the 1990s these ten annual workshops united laboratory data and astrophysical ideas to an unprecedented level, attested to by the book following the 1996 workshop "Astrophysical Implications of the Laboratory Study of Presolar Materials", eds. T. Bernatowicz and E. Zinner (AIP Conference Proceedings 402). Clayton and Meyer are the only Clemson personnel to have attended all ten, as did Zinner from Washington University. Chicago colleagues Lewis, Davis and Clayton also attended the first (1990) workshop. Photo by Charles Kehm, courtesy of Washington University. Additional photos from this 1999 Workshop can be seen on the Washington University web site at

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