Everyone pushed their slice of the trench down 3-6 inches or so, revealing another big flagstone next to the ones I worked yesterday, and a few more that may be part of the floor but are less obviously flags. At the western end of the trench it looks like there may be a wall appearing, forming an end to the building. Sean and I had many more nails and assorted pottery; I also turned up a golf ball sized piece of slag. Could be just a remnant from an earlier period rather than an indication of an industrial use for the building. Erin to my east had a couple of nice finds, one a spindle whorl, but again it's not clear if it really "belongs" with this late period structure.
Here's a closeup view of the area around my slice at the end of the day:
And a full view across the trench looking east, not looking a lot different to yesterday, but I think tomorrow we'll see things change a bit more significantly as we all get down to the floor level:
Supposed to be dry tomorrow, hopefully the forecasters have it right.