>>5138374 (PB) (Notables)
Hey Anon, while I also trust nothing cabal related…blood in concrete goes back to the Romans. IIRC, Scott Wolters talked about it on America Unearthed…couldn't find much on the web though.
https://www.reddit.com/r/architecture/comments/2u2v27/til_that_the_ancient_romans_used_blood_in_their/