Gaye,
 
I recommend you consult the Getty Museum in Los Angeles. They hold training  
seminars and conferences on just this sort of issue.
 
Ron May
 
 
In a message dated 4/1/2009 5:06:56 P.M. Pacific Daylight Time,  
[log in to unmask] writes:

Hi



I need to give conservation advice on an extensive  set of stone ruins which
still have some scraps of plaster on their inner  walls.  Does anyone have
any good advice on the best ways to conserve  the plaster other than roofing
the ruins which is extremely unlikely to  happen.



Regards Gaye



P.S. The weather in WA is  hot and dry most of the time but when it rains it
tips down. So preventing  water damage is a  factor.




**************New Low Prices on Dell Laptops – Starting at $399 
(http://pr.atwola.com/promoclk/100126575x1220631247x1201390185/aol?redir=http:%2F%2Fad.doubl
eclick.net%2Fclk%3B213540506%3B35046329%3Bx)