Document zQNVNXB0ZBo3nYzjJa5kyXxNR

CENTRAL RESEARCH AND DEVELOPMENT DEPARTMENT cc: S. W. Dixon HASKELL LABORATORY FOR TOXICOLOGY AND INDUSTRIAL MEDICINE MEMORANDUM May 5, 1983 TO: L. T. FREELAND PPD BEAUMONT FROM: JAMES E. HENRY CR&D HASKELL LABORATORY ASBESTOS FIBER COUNTS I did asbestos fiber counts on six samples submitted by you on 4/15/83. The standard phase contrast method (NIOSH P&CAM 239) was used. Analytical data is recorded in Haskell Laboratory Notebook No. E-32650, pp. 27-32. Results are as follows. Contact me if you have any questions. Sample Number Total No. of Fields Fibers Counted* Counted*** Total Fibers on Filters** Sample Volume (liters) , Fibeg3/cmJ AB-3-Blank 100 52-5 24 AB-1 100 AB-2 100 52-3 100 52-4 100 1.0 101.5 7.5 6.5 36.0 10.0 658 278,149 4,933 4,275 23,677 6,577 ----------90 380 380 670.50 648.15 ----------3.09 0.01 0.01 0.04 0.01 *Field area 0.013 mm2 **Filter area * 855 mm2 Corrected for blank. JEH/dar DUP 0S0819S DU 004207