Concrete of ancient Rome. Jan 11, 2023 11:59:01 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Swampy on Jan 11, 2023 11:59:01 GMT -5 Hmmm ...... Roman concrete seems to be better than what we can do today. Another ancient secret that we should need to know is Damascus steel, which, again, we cannot replicate. Then there're the Egyptian pyramids.
Concrete of ancient Rome. Jan 12, 2023 9:57:49 GMT -5 Quote Select PostDeselect PostLink to PostBack to Top Post by Sir John on Jan 12, 2023 9:57:49 GMT -5 All the work of them MARTIANS!You can always tell a Martian, they have a big head of gold hair.SJ