Fluctuations in the presence of particular stone artifact types in the excavation test unit at the Maymeja workshop provides insights into changing reduction activities at the workshop area through time. As described above, radiocarbon dates for the unit place the lower parts of the excavation in the Terminal Archaic, while the middle of the sequence (around level 4) falls at the Early / Middle Formative transition. As was reviewed in Chapter 3, these are times of interest in terms of obsidian distributions throughout the region.