Document zQmBD0db2eqrnkggjG4L88r3m

Report of Results: MVA1497 Examination of Micarta Asbestos Board Prepared for: Law Offices of Peter G. Angelos 300 East Lonbard Street, 18th FI Baltimore, MD 21202 Prepared by: MVA, Inc. 5500 Oakbrook Parkway, Suite 200 Norcross, GA 30093 26 September 1995 0: PROJECTS:1497:RP092695 \~7| MVA, Inc. -- Excellence in -=:Microanalysis EXHIBITSL 5500 Oakbrook Parkway #200 , Norcross, Georgia 30093 404-662-8509 Report of Results: MVA1497 Examination of Micarta Asbestos Board Introduction Portions of the asbestos board cut during the Micarta experiment (MVA, Inc. Project No. 0607) were examined by several microscopical techniques including stereo microscopy, polarized light microscopy (PLM), ultraviolet (UV) fluorescence, and fourier transform infrared (FTIR) microscopy. Analytical Results The sample, identified as GHP #444 and MVA laboratory sample D1870, was found to be a composite laminate material with an asbestos-containing base covered with non-asbestos layers. The top layer (Layer A) was a thin sheet of clear material composed of cellulose fibers and organic binder (melamine-aldehyde resin). Layer B consisted of a pigmented material with cellulose fibers and organic binder (melaminealdehyde resin). Layer C was found to be a laminate material of 8 asbestos-containing sheets composed of chrysotile asbestos, cellulose and phenolic resin. A view of a polished cross-section of the outer portion of sample D1870 clearly shows the Layers A, B and Layer C (Figure 1). The entire thickness of the material was 0.052' - 0.053'. Figures 2 an 3 show a closer view of the upper portion of Sample D1870. The reflected darkfield image (Figure 2) clearly shows the three layers and in the reflected light brightfield image (Figure 3) the cellulose is more clearly evident. Figures 4 and 5 show the cellulose fibers in layer B. In Figure 6 the fluorescence microscopy image of a polished cross-section shows that Layer C is composed of layers of thin sheets of asbestos/cellulose sandwiched together to form a single composite material. Conclusion The laboratory analyses determined that the material cut in the experiment is a composite laminate material composed of asbestos, cellulose sheets and a phenolic resin with a thin pigmented cellulose and melamine-aldehyde resin top sheet. This material has the same construction as found in the Micarta product patent information. D:PROJECTS:1497:RP092695 Figure 1. View through a stereo light microscope of a polished cross-section of a portion of an asbestos-containing board material (D1870). Layers A are outside layers which contain no asbestos. Layer C is a chrysotile-containing layer. Magnification = 68X D:PROJECTS: 1497:RP092695 Page 2 Figure 2. View through a stereo light microscope of a polished cross-section of a portion of the asbestos-containing board material (D1870) as it appears with darkfield illumination. Layers A and B are outside layers which contain no asbestos. Layer C is a chrysotile-containing layer. Magnification = 115X Figure 3. View through a stereo light microscope of a polished cross-section of a portion of the asbeslos-containing board material (D1870) as it appears with brightfield illumination. Layers A and B are outside layers which contain no asbestos. Layer C is a chrysotile-containing layer. The cellulose fibers are clearly visible in this image. Magnification = 115X D'PRGJECTS 1O7RP092695 Page 3 Figure 4. PLM view of thin-section of a portion of the asbestos-containing board material (D1870) showing the cellulose fibers. Magnification = 250X Figure 5. PLM view of thin-section of a portion of the asbestos-containing board material (D1870) showing the cellulose fibers. Magnification = 500X D: PROJECTS: 1497: RP09269S Page 4 Figure 6. View through a light microscope of a polished cross-section of a portion of the asbestos-containing board material (D1870) as it appears with UV illumination. Layers A and B are outside layers which contain no asbestos. Layer C is a chrysotilecontaining layer. The sheets of asbestos/cellulose fibers are clearly visible in this image. Magnification = 68X D PROJECTS 1497.RP052595 Page 5 Appendix A Infrared Spectra Comparing Layers of 01870 with Organic Binders. D:PROJECTS:1497:RP092695 Page 6 A sb e sto s L a y e r (RED) P henol-F orm aldehyde (BLUE) o o o o om o o o CM OOin CM o o om o o ion oooooooooo ^crioor'U3Ln'>a'n(M^ n:PRO.IECTS:H97 RP092695 Wavenumber (cm-1) p ag0 7 C le a r Top L a y e r (RED) M elam ine - Form aldehyde (BLUE) D PROJECTS:H97RP092695 Wavenumber (cm-1) Page 8 C lear Top Layer O PROJECTS H 97 RP092695 Wavenumber (cm-1) Page 9 Top Layer w ith Pigment D PROJECTS 1497 RP092695 Wavenumber (cm-1) Page 10 MVA1497 D:PROJECTS:1497 RP092695 Wavenumber (cm-1) Page 11 brown binder D.PROJECTS: 1497:RP092695 -- W aVenUmber (C m Page 12 MVA, Inc. PLM Constituent Analysis Date: 07/05/93 MVA #: 0607 Location: Sample I.D. #: D1870 Client Sample I.D. #: 444 Examination using the stereomicroscope: D1870 is a green consolidated material with white fibers and a tan powdery surface layer with a smooth finish. CONSTITUENT Fibers: Cotton Fiberglass Filament Wool Mineral Wool Hair Paper/Wood Chem. Proc. Mech. Proc. Synthetic % CONSTITUENT Pigment ___ Binders: Kaolinite -- Montmorillonite -- Gypsum -- Anhydrite -- Portland Cement Lime (hydrated) -35 Precipitated -- Carbonate -- Starch (+) Other ChrysotileAmosite Asbestos Minerals - 35 Anthophyllite Crocidolite % CONSTITUENT Fillers: Diatoms - - - Iron Chromite -- Iron Oxide -- Limestone -- Magnetite -- Mica -- Perlite Synthetic Foam -- Pumice ~ 2 Quartz * Talc Vermiculite _ _ Tremolite/ -- Actinolite Comments: No asbestos was detected in the tan surface layer and it is not included in the above percentages. *The binder is a green resinous material that comprises ~ 28% of the sample. Diatoms and/or radiolaria are included in this percentage. **A trace amount of amosite was found adhering to the back of the sample along with an adhesive material; the amosite therefore appears to be a contaminant, Analyst: Randy Boltin 0:PROJECTS:1497:RP092695 Page 13