[NHCOLL-L:3440] RE: Coal dust removal

[Lorraine Cornish]

Some material may respond well to laser cleaning although this is an
expensive option unless you have access to one. I have successfully
removed carbon residue from fire damaged feldspar material using infra
red pulsed wavelength laser. It is particularly useful where the object
is too fragile for more conventional cleaning techniques e.g. solvent
cleaning.
Lorraine Cornish
Senior Conservator
Department of Palaeontology
The Natural History Museum
Cromwell Road
South Kensington
SW7 5BD
Telephone-020 7942 5137 
Mobile 07920 007064
E-mail L.Cornish at nhm.ac.uk 

________________________________

From: owner-nhcoll-l at lists.yale.edu
[mailto:owner-nhcoll-l at lists.yale.edu] On Behalf Of Steve Sullivan
Sent: 09 May 2007 16:31
To: NHCOLL-L at lists.yale.edu
Subject: [NHCOLL-L:3436] Coal dust removal



Many of our mineral, shell, and coral specimens have a residue that
appears to be coal dust from the old heating system of the building.  In
some drawers the specimens are completely black, though most are just
lightly soiled, labels sometimes are uniformly dusted along with the
specimen and unit tray.  Does anyone have experience methods or
materials for removing this sticky dust?
 
--Steve
 
Steven M. Sullivan
Collections Manager
Chicago Academy of Sciences
Notebaert Nature Museum
2430 North Cannon Drive
Chicago, Illinois 60614
P: 773-755-5100x2042
F: 773-755-5199
www.NatureMuseum.org

Maintaining a physical record of Midwestern biodiversity since 1857. 
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