Document MGZBLo2Dn8eb1Mzxr9o3mjr09

INTERNAL. CORRESPONDENCE r 'NSNG AND PETALS DIVISION Ta(Naau) t.c.r^a Mr. Paul McDaniel Medical Depc./' 4ch Floor, New York P. 0. BOX K, KINS CITY, CALIFORNIA $3930 oi. July 10, 1973 O/ifltacfhif D#4 c.ar -F. H. Larrison, Jr. R. J. Kronkhyce Air Samples - May, 1973 :' Sample No., Location, Time St Air Flow Conditions Parcicle Count Ave. 4-5 Micron Count Per Ml. l. On Outside Operator (Breathing zone) 1.4 LPM/15 min. .1:00 PM Pilling Com Bin with front-end loader, ground dry, no wind, eat working ore pile, ore damp 100?. 28.83 7.67 2. Inside Loader Cab 1:00 PM, 1.4 LPM/ IS min. Same as #1. 26.67 7.02 ' 3. Same as #1, 1:20 PM Same as #1. 22.17 5.66 4. Same as #2, 1:20 PM Same as #1. 22.83 5.86 S. On Cat Operator (Breaching zone) 1.4 LPM/15 min. 2:30 PM Pushing ore on old pile, ore damp, 12.00 2.57 wind 10-15 mph from north, 100?. 6. On seat of Cat, 2:30 PM, 1.4LPM/15 min. . Same as #5. * 12.67 ' t 2.73 7. Same as #5, 2:50 PM Same as #5. 14.67 3.33 a. Same as #6; 2:50 PM Seme as #5 13.67 3.03 9. On RG-244 Bagger, Bagging RG-244, All doors to bag (Breaching zone) ging room open, wind 10-15 mph 1.4LPM/15 pin. ' - from' north, 95?, area dusty 3:15 PM 27.67 7.32 concinued .;... X414282 A24222 Air Sample* -2- Sample No., Location, Time & Air Flow Conditions 10. RG-244 Bagging Room (area), 3:IS PH, 1.4 LPM/15 min. Same as #9. 11. Same as #9, 3:30 PM Same as #9. 12. Same as #10, 3:30 PM Same as #9. Blank. July, 1973 Particle Count Ave. +5 Micron Count Per Ml. 9.67 .1.87 34.00 9.33 3.50 9.24 1.77 ss* X4I4283 A24223