Document RJnD9G0YaDoJnwE02nMZKwKVE

PLAINTIFFS EXHIBIT CAM-381 N'T OF EALTH, EDUCATION. A N D W E L F A R E PUBLIC HEALTH SERVICE C E R T E S r C f . CIS EASE C C K T 5 0 L n a t c m : i n s t .t u t e =C'= OCCu b a t i c n a S A .-STY AND I--E ALTH .-- ALOSH C H ESTN U T R iDGE r o a c MORGANTOWN. W EST VIRGINIA 2-EB05 December 4, 1978 Mr. Gordon Gill 555 S. Flower Street Los Angeles, California 90071 Dear Mr. Gill: The preliminary evaluation of the environmental data collected as part of the industry-vd.de study of talc miners and millers has been coupleted. Hie analysis of your Beaverhead Mine facility is included. This facility has bean designated as plant number 16. This cone number is unique to this facility and will appear on all summaries of data. The respiratory dust samples were collected and analyzed according to NIOSH method SDS #29.02. This is listed in Table I. The asbestos samples were collected and analyzed according to NIOSH method P & CAM #239. This is reported in Table II. The crystalline silica samples were collected and analyzed according to NIOSH method P & CAM #109. This is reported in Table H I . The trace metal samples were collected and analyzed according to NIOSH method P & CAM #173. This is reported in Table IV. The job classification codes for your facility are as follows: Code # Job Classifications 10 Maintenance 14 Sorter 15 Driller 16 Ttuck driver 19 Miner II (laborer) 20 Shovel operator CAMC-Abeyta-000004 Mr. Gordon Gill - Pace 2 lbs arithmetic means of the respirable oust samples are given in Table V. i%e would like to thank you for your cooperation in this project. If you have any questions concerning these results Dlease feel free to contact re at (304) 599-7421. ` Enclosure Sincerely yours, _ / '' ! 'A j-vbic. Alice Greife Industrial Hygienist Environmental Investigations Branch CAMC-Abeyta-000005 :e I TAT I S T I C A L .......... OBS 2 bt> ` 266 267 268 269 ' 270 2 71 272 273 2774 275 ' 276 27/ 278 279 UK 206 207 207 211 211 21 1 211 211 211 '206 206 206 20 6 206 206 ANALYSIS _ SYSTEM PL A 47=16 JOB WORKER DUST 7 / D7T6 1C H 0 . 0 3 10 5 O.Cit 1U 15" ' 1 . 1 6 * " m 14 0 . 3 6 Vi 13 0 . 9 3 1 10.... . 1 .' U2 " 14 9 1 . 3 8 m ' 12 2.86 it> 6 ' C. 1 4 -- 16 3 O.CO 16 1 0.. 29 ' 19 8 0 . 6 6 " 20 11 1 . 8 5 20 2 0 . 1 0 11 'fl 3 -TUESDAY, Dust concentrations are expressed as mg/nf CAMC-Abeyta-000006 detected (fibers/cc) / .01 Plant 16 Table II (asbestos) detection limit (fiber/cc) .01 Table III The bulk analysis of your talc revealed /_.8% free silica. The limit of detection is .8%. Iron 7 3 Manganese l_2 2 Table IV (ug/sample) Arithmetic Mean Calcium 7. Aluminum 23 Limit of Detection 5 15 Zinc /_ 2 2 Mickle L2 2 Table V Job X(mg/m3) SD 7 .16 10 .04 14 1.35 15 .14 16 .15 19 .66 20 .98 .01 .83 -- .21 -- 1.24 N 1 2 6 1 2 1 2 X = arithmetic mean SD = standard deviation N = number of workers in job classification CAMC-Abeyta-000007