Off the top of my head, 10. Easy.Yeah, that pic is actually white oak, we get it often! How many beams do you need?
I want to say Norwood can mill 20' lengths and up to 36 inch diameter if you're careful with your first cuts. I like it, but its the only mill i've run, so nothing to compare to.
These are for long term historic railcar preservation projects, so not looking for perfect grain, or anything more than white oak that I can mill down to size.
I'll send you a text message, if not now, when I get back to the US tomorrow.
Dan