Jemdet Nasr
The Jemdet Nasr period settlement (3100–2900 BC) extended over an area of of Mound B. Some was occupied by the single, large mudbrick building that was excavated by Langdon, and where the clay tablets were found. In and around this building, kilns for firing pottery and baking bread were found, and other crafts like weaving. Many of these crafts, and also agricultural production, feature prominently in the proto-cuneiform tablets – indicating that much of the economy was centrally controlled and administered. In the texts from Jemdet Nasr, the term "SANGA AB" appears, which may denote a high official. The building was probably destroyed by fire. There is no evidence for far-reaching trade-contacts; no precious stones or other exotic materials were found. However, the homogeneity of the pottery that is typical for the Jemdet Nasr period suggests that there must have been intensive regional contacts. This idea is strengthened by the finding of sealings on the tablets of Jemdet Nasr that list a number of cities in southern Mesopotamia, including Larsa, Nippur, Ur, Uruk and Tell Uqair.