Document Em2GJ77Gymkmvm13ap0yMZwQR

lum w.hi cc: S. W. Dixon E. 1. du Pont de Nemours 5 Company IIKWMMIW Haskeu. Laboratory ran Toxtcouxiv and Industrial. Medicine euctdn road, Newark, Delaware 19711 CENTRAL. RESEARCH AND DEVELOPMENT DEPARTMENT July 28, 1983 L. T. PREELAND POLYMER PRODUCTS DEPARTMENT BEAUMONT ASBESTOS FIBER COUNTS I did asbestos fiber counts on 3 samples submitted by you on 6/10/83. The standard phase contrast method (NIOSH PaCAM 239) was used. Analytical data is recorded in Haskell Laboratory Notebook No. E-32711, pp. 15, 22 ( 23. Results are as follows. - Total No. of Sample Fields Fibers Number Counted* Counted Total Fibers on Filters** Sample Volume (liters) Fibers/cra' Blank 100 0.0 < 329 52-1 20 347.5 1,142,740 52-6 20 359.0 1,180,558 30 30 38.09 39.35 Asbestos fiber analysis were also done by scanning electron microscopy- and energy dipersion x-ray microanalysis by Electron Microscopy Service Laboratories, Inc. Refer to attachments. Contact me if you have any questions. DU 004184