Beachnut, you are wrong when you say that "Jones and Harritt did no test find out what the dust was." Jeff Farrer did TEM and Kevin Ryan did FTIR. Results of these materials characterization tests were never released. Steven Jones then went on to do a THIRD test, as he wrote here: “After our paper was published, we went to another lab trying to get XRD patterns that would definitively resolve the question of whether elemental aluminum was present. But like Dr Farrer's TEM results, there was no clear pattern of ANY aluminum-bearing compound in the XRD results. These results have surprised me, not satisfied me. So we go to further experiments.”
So you see Beachnut, Jones/Harrit/Ryan/Farrer did the tests all right, they just didn't like the results and never published them! Gotta stay accurate about these things ya know...