User blog comment:Unownshipper/Metallurgists Wanted: Rapture's Natural Resources/@comment-75.36.142.53-20140810062120/@comment-3967731-20140810211356

For those of us who have not  read the book (for various reasons), please explain the whole "Ryanium" thing that's been briefly mentioned in a few other Talk Pages.

So you're saying some ceramic materials can be used in place of concrete? What kind of ceramic materials? Please go into detail.