Hi Folks, This morning I posted the information I received from the Association for Gravestone Studies. The information I posted came directly from an e-mail letter sent to me from Fred and Rosalee Oakley of the organization and from the book mentioned, "The Graveyard Preservation Primer by Lynette Strangstad" which I purchased from the association. I am not a Chemist. I presumed their advise would be correct. Dan has issued a WARNING concerning this information. I repeat - I am not a Chemist. I posted the information in good faith. I suggest that anyone who is in doubt do their own investigation. Many people seemed to be interested in this information which is why I posted it. The Calcium hypochlorite solution is to be used only for biological growth and only when the first part of the procedure, the soaking and scrubbing with plain water, does not do the job. I have already given the sourse of my information. I will repeat it. The Association for Gravestone Studies 278 Main Street Suite 207 Greenfield, MA 01301 (413) 772-0836 I was simply passing on the results of my inquiry. Marion Bale ==== PENNA-DUTCH Mailing List ==== New? Looking for a quick connection? Visit the surnames list associated with this mail list at http://members.aol.com/PennaDutch/pdlsurnames.html