I found this out by taking a drive with Tom Minichillo who is the archaeologist for King County Road Services Division (which insiders just call “Roads”.)
As we were driving out to the active “dig” that Tom needed to check in on, he explained that whenever the county does road work in an area that could be an archaeological site, they dig a scattering of holes and sift through the dirt to see if anything comes up.
If they do find something, typically it’s little shards of rock that are the remnants of tool making.
These pieces can be very small, so they sift lots of dirt through ¼” screens to see what they can find. If they find enough of these shards in the test holes, then they dig a larger hole where they think they’ll find the most objects. Read the rest of this entry »