Several years ago I worked on the NJ State Capitol Annex restoration project and a firm from Bristol UK named Hayles and Howe were doing the Scag restoration. I was lucky enough to obtain a copy of a lecture give by one of the owners of that company on the scagliola procedure. It is quite detailed and full of interest to scag fans..I'll chk back here to see if there are questions and will try to answer...in the mean time I'll copy the lecture and perhaps send it to those interested....Lets spread the knowledge and keep the good things alive!