DIRECTOR

 Iklaina Archaeological Project, University of Missouri-St. Louis and Athens Archaeological Society (1998-present)

 Eleusis Archaeological Project, University of Missouri-St. Louis and Athens Archaeological Society (1994-2016)

 Oropos Survey Project, University of Manitoba (1988-2001); UM-St. Louis (2001-2005)

SITE/TRENCH SUPERVISOR

 Voidhokoilia, Pylos (University of Athens and Athens Archaeological Society, 1982, 1983)

 Epidauros (University of Athens and Athens Archaeological Society, 1983)

 Ancient Corinth (American School of Classical Studies at Athens, 1983)

 Mycenae (Washington University in St. Louis and Athens Archaeological Society, 1984,1987)

 Ithaka (Washington University in St. Louis and Athens Archaeological Society, 1985, 1986)

ARCHAEOLOGICAL ADVISOR

 Excavations at Olbia, Ukrainian National Academy of Science, Institute of Archaeology and The University of Manitoba (1995)

DIRECTOR OF MUSEUM STUDIES

 Naxos Archaeological Museum (1989-1997)