Cheryl,

Several of our sites fire cannons at special events & reenactments.  Usually
the cannons are located far enough away from structures that vibrations
don't seem to bother them.  Nor have the vibrations been such that small
artifacts "walked" off furniture & shelves.

Our objects conservator occasionally conducts a walk-through of structures
that may have been affected by the black powder smoke.  Residue from black
powder can seriously affect surfaces of metal objects.  One of our historic
structures has an annual reenactment that features firing of muskets from
inside the house, but so far he has not found too many objects that needed
his attention.  Usually the staff packs up smaller artifacts before this
event.

We have regulations monitoring the amount of black powder used, and no one
is allowed to fire a cannon or firearm unless he/she has been through the
black powder course taught by our staff.  Our course is so well done that we
have NPS staff has attended, as well as other agencies.  You may want to
contact Jann Brown in our Eastern Office in Greenville at
[log in to unmask], or 252/830-6580.  I believe she has just updated our
black powder program.


Martha Battle Jackson
Chief, Collections Management
North Carolina State Historic Sites
301 North Blount Street, Raleigh, NC  27601
(919) 715-1912; Fax (919) 733-9034
[log in to unmask]

E-mail correspondence to and from this sender may be subject to the
North Carolina Public Records Law and may be disclosed to third parties.
The views expressed by the sender may not reflect those of my agency.


----- Original Message -----
From: "Cheryl Munyer Branyan" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, December 12, 2003 12:31 PM
Subject: Cannon fire and historic sites


> I am at an historic site that hosts an annual and popular Civil War
> Reenactment.  Recently, there have been questions about the effects of
> vibration from cannon fire on the historic structures.  Does anyone know
of
> research in this area? Has anyone conducted tests or noticed an impact on
> structures?  I am fairly new to the list so I apologize if this topic has
> been covered recently. Thank you for your responses.
>
> Cheryl Munyer Branyan
> Branch Director
> Historic Jefferson College
> Mississippi Department of Archives and History
> P.O. Box 700
> Washington, MS 39190
> 601/442-2901   fax: 601/442-2902
> www.mdah.state.ms.us
>
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