Two ancient coins, one used to pay the Temple tax and another minted by the Greek leader the Jews fought in the story of Hanukkah, have been uncovered amid debris from Jerusalem's Temple Mount, said Bar-Ilan University Professor Gabriel Barkay, who is leading the sifting operation.
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http://www.haaretz.com/hasen/pages/ShArt.jhtml?itemNo=1048260
ABR participated in the Temple Mount Sifting Project in the summer of 2007. For comments from participants on this exciting project, see: ABR Travelers Return from The Temple Mount Sifting Project and Jerusalem Field Studies Tour
Also, see this article by Gordon Franz: The Tyrian Shekel and the Temple of Jerusalem