sample="quota" bates="510627850" isource="rjr" decade="1980" class="ni" date="19841214" RJR Interoffice Memorandum Re: Analysis of Flavor Crystals by EDX Date: December 14, 1984 To: Dr. Donald L. Roberts From: Guy Spence EDX and SEM analyses showed crystals that were composed of silicon and zirconium. The crystals were somewhat larger than the previous samples I analyzed. In this batch a typical crystal was ca. 1.5 mm-2.0 mm on the long axis while the photomicrographs of former sample crystals showed comparable dimensions of 0.7 mm ± 0.2 mm. Some small crystalline fragments were also seen in this particular batch. The EDX spectra, when the integrals of X-ray counting for silicon and zirconium were determined, less background, showed silicon to constitute 58.5% of the spectrum and zirconium 41.5%. Bear in mind, though, that these are only good estimates, and the numbers are made a little less reliable because both elements show counts for 2 adjacent, but minor, characteristic energy lines. Guy Spence /bmg Xc: Mr. J. A. Giles Dr. J. T. Dobbins, Jr.