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 ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).