I used to work at a cabinet shop. Everytime the wood supply truck came, the individual stacks of wood were always separated with rough cut white oak beams, approx 2" x 3" x 48". These things were usually very mangled and splintery, but they were tough, tough, tough!
I make a couple of pretty rough wooden mallets out of this stuff, well the heads anyway. I used quarter-sawn maple for the handle of one. These were just for rough work around the shop, nothing special, but they have held up.
A few times me and the shop boss would rip down these planks on the tablesaw into more usable sections, like maybe 1/2" thick. This way I could stack them to dry them out (whoever said they are not kiln dried is right, usually they have lots of cracks as well).
I still have a couple sections of this white oak out in the garage. I think I might try to slice them down into side / back blanks, as I have always wanted to make a little white oak parlor guitar.