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<P>Has the CONTAM program been used to analyze the stack effect in tall buildings? </P>

<P><A href="http://www.bfrl.nist.gov/IAQanalysis/CONTAM/download.htm">http://www.bfrl.nist.gov/IAQanalysis/CONTAM/download.htm</A></P>

<P>Varkie Thomas<BR><BR><BR><BR></P></BODY>