Olive oil extraction installation (işlik) dating back to the third quarter of the 6th century BC uncovered in Klazomenai is the only surviving example of a level and weights press from an ancient Greek city and precedes by at least two centuries the next securely datable earliest presses found in Greece.[8] It was restored and reconstructed in 2004–2005 through collaboration between Ege University, a Turkish olive-oil exporter and a German natural building components company, as well as by local artisans, on the basis of the clearly visible millstone with a cylindrical roller and three separation pits. The olive oil obtained turned out to be quite a success in business terms as well. The reconstructed olive oil press is located on the original mainland site of Klazomenai, at 38°21′40.4″N 26°46′13.3″E﻿ / ﻿38.361222°N 26.770361°E﻿ / 38.361222; 26.770361.