The Jerusalem Development Authority administered the Jerusalem City Walls Conservation Project in cooperation with the Prime Minister's Office and the Israel Antiquities Authority beginning in 2007.[31] Within the framework of the project, by the summer of 2011 half of the Old City walls had undergone cleaning and restoration treatment. Six months of restoration work performed at Zion Gate culminated in a moving rededication ceremony in July 2008 attended by veterans of the Palmach, 468 years after the gate had originally been built.[32] Two months of restoration work performed at Jaffa Gate were completed in April 2010, and an official rededication ceremony was held to mark the occasion, 472 years after the gate was first dedicated.[33] The restoration of Herod's Gate was completed in June 2010, whereupon a reinauguration ceremony was held attended by the Old City's Nawar mukhtar, Abed-Alhakim Mohammed Deeb Salim.[34] The restoration work at Damascus Gate, lasting more than a year and completed in August 2011, involved the reconstruction of part of a crenellated turret damaged in the Six-Day War.[35] The project, lasting a total of five years, was declared complete in September 2012 after restoration work performed at Lions' Gate – the seventh and last gate to be restored – was concluded.[36]