On September 25, 2007, Yuval Baruch, archaeologist with the Israeli Antiquities Authority announced the discovery of a quarry compound which may have provided King Herod with the stones to build his Temple on the Temple Mount. Coins, pottery and an iron stake found proved the date of the quarrying to be about 19 BCE. Archaeologist Ehud Netzer confirmed that the large outlines of the stone cuts is evidence that it was a massive public project worked by hundreds of slaves.