Mrs. MWT used to do that, too! Small world.
There is a specific dump where that was all placed and sifted.
The PhD candidates who started the project of sifting through the "renovation debris" have finally gone legit in late 2006, and have Israeli Antiquities Authority authorization to continue their work. Only took 5 or 6 years and the discovery of significant finds to push the Israeli authorities to face reailty that the Wahf is destroying Jewish history.