Temple Mount Sifting Project:
“The seeds of the Sifting Project took root in 1999 when archaeologists Barkay and Dvira salvaged some 9,000 tons of dirt that had been...dumped into the Kidron Valley between 1996 and 1999 by the Northern Branch of the Islamic Movement during a large-scale building project on the Temple Mount: the construction of a subterranean mosque in an area colloquially called Solomon’s Stables…”
No archaeological assessment was done at the time of removal of the debris.(JGL comment.)
“In the past 15 years, through the help of some 200,000 paying volunteers the project has recovered over 500,000 artifacts from earth...including 5,000 coins, inscriptions, mountains of pottery, Egyptian-era cultic items, jewelry, remnants of warfare, and a plethora of fauna remains: bone tools, the charred bone remains of Temple Mount sacrifices, and even pig bones from Roman pagan and Christian periods. The artifacts span all periods of Jerusalem, from Jebusite settlement prior to the biblical kingdoms, to the modern era…”
https://www.timesofisrael.com/temple-mount-sifting-project-reboots-to-seek-more-direct-evidence-of-1st-temple/#gs.fludhr