<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=us-ascii"> <META content="MSHTML 6.00.2900.2769" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV dir=ltr align=left><FONT face="Comic Sans MS" color=#000080></FONT> </DIV><BR> <BLOCKQUOTE dir=ltr style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000080 2px = solid; MARGIN-RIGHT: 0px"> <DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left> <HR tabIndex=-1> <FONT face=Tahoma size=2><B>From:</B> pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] <B>On Behalf Of = </B>Farrell<BR><B>Sent:</B> December 04, 2005 1:42 PM<BR><B>To:</B> Pianotech<BR><B>Subject:</B> = Re: Petrifying process of wood<BR></FONT><BR></DIV> <DIV></DIV> <DIV><FONT face=Arial size=2>Wood is petrified through a process = of mineral replacement. Once petrified, the object that was once wood becomes rock. Petrification occurs over a very long period = of time - thousands/millions of years. It can occur when wood is buried in the ground and groundwater migrates through it - it is the = groundwater carrying dissolved minerals that is the vehicle for wood petrification.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2><A = href="http://www.americansouthwest.net/arizona/petrified_forest/geology= .html">http://www.americansouthwest.net/arizona/petrified_forest/geology.= html</A></FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Wood does not become petrified in a = functioning, non-buried piano. Period.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Terrence M. Farrell, = P.G.</FONT></DIV> <DIV><FONT face=Arial size=2>Licensed Professional Geologist<SPAN class=734092800-05122005><FONT face="Comic Sans MS" = color=#000080 size=3> </FONT></SPAN></FONT></DIV> <DIV><FONT face=Arial size=2><SPAN class=734092800-05122005></SPAN></FONT> </DIV> <DIV><FONT face=Arial size=2><SPAN class=734092800-05122005></SPAN></FONT> </DIV></BLOCKQUOTE> <DIV dir=ltr><FONT face=Arial size=2><SPAN = class=734092800-05122005><FONT face="Comic Sans MS" color=#000080 size=3>You're right about wood = but -- based purely on experience -- perhaps not when it comes to wool. Some hammer = makers have figured out how to shortcut the process in their hammer presses.</FONT></SPAN></FONT></DIV> <DIV dir=ltr><FONT face=Arial size=2><SPAN class=734092800-05122005></SPAN></FONT> </DIV> <DIV dir=ltr><FONT face=Arial size=2><SPAN = class=734092800-05122005><FONT face="Comic Sans MS" color=#000080 size=3>Del</FONT></SPAN></FONT></DIV></BODY></HTML>