...I'm not sure they could find any artifacts larger than a bread box.
Now, I realize I'm being unkind and that I'm going on the officially released photos only and my experience in one archaeology class and at one dig. But I only recall one photo of sifting screens at work. On a hillside like that (which has been used for many things), they should be finding all sorts of stuff through various layers of dirt... from modern buttons and tin cans to medieval trash pits to Roman buckles and so forth.
In my tiny experience, EVERY artifact on a multicultural site is important because it helps date the sequence of events; the history of the site.
They've dug up enough terrain that they could date layers of soil and start talking about the sequence of events there, even on a rough scale. Instead, they announce that they've found "no artifacts" (and a report of a skeleton? I hadn't seen that) on a hill that's been occupied for centuries.
That's just not believable. I'll be happy to trot over there with a metal detector and start finding all sorts of artifacts. If someone will fund my trip, I can find a class full of budding archaeologists who would come and do a professional type dig... and I bet Kat would even send me string so we could stake out areas correctly!
(I do remember ONE photo that appeared to be an area where a proper dig (of the sort that my profs would approve of) was taking place. However, that was weeks ago and the more recent photos don't show that kind of approach being done.)