Michael,
As to the Cuba, Big Easy slate connection Joe Jenkins 814-786-9085.  You
probably know him, but I sure he will investigate thoroughly and include
this as an addendum to his next book.  Plus he will be very appreciative for
an excuse to drag wife et al to SwimpCity.  My favorite event is dolphin
mating under the full moon at Grand Isle.  Ask me about it sometime.
    With regard to the cleaning - TH was not on my list, but thank you for
the intro. and I will follow thru on this.

Best,
Leland
-----Original Message-----
From: Michael Davidson <[log in to unmask]>
To: [log in to unmask]
<[log in to unmask]>
Date: Wednesday, January 27, 1999 2:41 AM
Subject: Cleaning sandstone


>Leland; The Gommage system was used quite a bit at Yale and I think there
is a
>crew going there in the Spring. We also did alot of testing at New Haven
City
>Hall; and TH was a sub to the Coatings people Michael refered you to; ( I
>think it was the same ) anyway
> I helped bring Thomann - Hanry into the country as Director of Restoration
>for the Cathedral St. John I was looking to carefully clean stone mullions
>next to fragil stained glass and the gommage system did just that..its
perfect
>for friable surfaces as ..it is the only system i know that you can
controll
>the level of cleaning by adjusting the psi( see architectual record this
>month)( also building stone mag that has Philly city hall on it) call Chris
>Dissaux( dee-so)   212 736-1702
> tell him you know me (and get hung up on ) no...he will get you a
>test..Regards Michael