E-sagdil was part of the Enlil Temple, built under Ur-nammu, the first King of IIIrd Dynasty of Ur (2111-2094 BC).
See:
- http://encyklopedia.naukowy.pl/E-sagdil
- Tim Clayden, Bernhard Schneider: Assurbanipal and the ziggurat at Nippur, KASKALRivista di storia, ambienti e culture del Vicino Oriente Antico vol. 12, Firenze, 2015