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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Start with NCPTT, which as done extensive work on this topic:
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<div>http://ncptt.nps.gov/wp-content/uploads/Best-Practices-Final.pdf<a href="http://ncptt.nps.gov/wp-content/uploads/Best-Practices-Final.pdf" target="_blank">http://ncptt.nps.gov/wp-content/uploads/Best-Practices-Final.pdf</a></div>
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<div>and<br>
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http://ncptt.nps.gov/wp-content/uploads/Debbie_terra_firma10.pdf<a href="http://ncptt.nps.gov/wp-content/uploads/Debbie_terra_firma10.pdf" target="_blank">http://ncptt.nps.gov/wp-content/uploads/Debbie_terra_firma10.pdf</a> for its good list of resources.</div>
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<div>Also, contact NCPTT directly to discuss the growth, via Mary Striegel</div>
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<div><a href="http://ncptt.nps.gov/about-us/contact-staff/mary-striegel/" target="_blank" style="font-size: 10pt;">http://ncptt.nps.gov/about-us/contact-staff/mary-striegel/</a><a href="http://ncptt.nps.gov/about-us/contact-staff/mary-striegel/" target="_blank" style="font-size: 10pt;">http:/</a></div>
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<div>Cathy</div>
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<div>Catharine Hawks</div>
<div><span style="font-family: tahoma; font-size: x-small;">Conservator</span></div>
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<div><font face="tahoma"><font size="1" face="tahoma">National Museum of Natural History, MRC 106</font></font></div>
<div><font size="1" face="tahoma">Research & Collections, NHB 394</font></div>
<div><font size="1" face="tahoma">Smithsonian Institution</font></div>
<div><font size="1" face="tahoma">PO Box 37012</font></div>
<div><font size="1" face="tahoma">Washington, DC 20013-7012</font></div>
<div><font size="1" face="tahoma">Office 202.633.0835</font></div>
<div><font size="1" face="tahoma">SI Cell 202.701.8458</font></div>
<div><font size="1" face="tahoma"><font face="tahoma">CH Cell </font>703.200.4370</font></div>
<div><font size="1" face="tahoma"><a href="mailto:hawksc@si.edu">hawksc@si.edu</a></font></div>
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<div id="divRpF841248" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> nhcoll-l-bounces@mailman.yale.edu [nhcoll-l-bounces@mailman.yale.edu] on behalf of Scott, Elizabeth (DNR) [EScott@indianamuseum.org]<br>
<b>Sent:</b> Monday, November 24, 2014 10:45 AM<br>
<b>To:</b> 'nhcoll-l@mailman.yale.edu'<br>
<b>Subject:</b> [Nhcoll-l] Algae on limestone track ways<br>
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<p class="MsoNormal">We have multiple forms of algae on the surface of some limestone track ways we want to remove.</p>
<p class="MsoNormal">Any suggestions?</p>
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<p class="MsoNormal">Elizabeth M. Scott</p>
<p class="MsoNormal">Natural History & Archaeology Preparator</p>
<p class="MsoNormal">Conservation Department</p>
<p class="MsoNormal">Indiana State Museum</p>
<p class="MsoNormal">650 W Washington St</p>
<p class="MsoNormal">Indianapolis IN 46204</p>
<p class="MsoNormal">317-234-1731</p>
<p class="MsoNormal">escott@indianamuseum.org</p>
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