Office building in Ione, CA…Built 1860s. Finally find the attic area and thought I was on ground again when I found sandy loam in the attic. Pics to follow tomorrow sometime but it was interesting and I ask the buyer if they had a coffee cup which they handed to me and I scooped out with no problem a cup full of sandy loam. probly 3" thick and in contact with the framing.
I expect it is dry . No big deal .I think a lot better then nothing .
I have done many with Wood shaving to me that is a big deal as shaving will burn big time .