The simple answer is yes.  Sometimes it takes a second glance.  Most of the
thirties stuff was made to look like limestone.  In unweathered (sheltered)
areas it almost always develops a yellow cast and some black crusting.  In
exposed areas, it gets more aggregate exposed.


Dr. Judith E. Selwyn
Preservation Technology Associates, Inc.
2 Center Plaza, Suite 400
Boston, MA 02108

617 598-2255
fax 617 227-5535
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----- Original Message -----
From: "John Callan" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, June 19, 2005 2:34 PM
Subject: [BP] ID Cast Stone vs natural?


> Are there any readily observable differences between good 1930's cast
> stone and natural stone?
>
> -jc
>
> --
> To terminate puerile preservation prattling among pals and the
> uncoffee-ed, or to change your settings, go to:
> <http://maelstrom.stjohns.edu/archives/bullamanka-pinheads.html>
>

--
To terminate puerile preservation prattling among pals and the
uncoffee-ed, or to change your settings, go to:
<http://maelstrom.stjohns.edu/archives/bullamanka-pinheads.html>