SOILS ANALYSIS Dr. Neil Tabor, Southern Methodist University   Neil Tabor (center) explains soil in PC 23 scarp to Robert Vander Poppen (left) and Michael Thomas.   Neil Tabor examining soil in Trench PC 23 scarp.   Robert Vander Poppen and Neil Tabor discuss soil content of PC 23 stratigraphy.   Co-Directors: Gregory Warden gwarden@mail.smu.edu and Michael Thomas mlthomas@mail.utexas.edu Excavation house phone during the field season: (011-39) 055-844-9834