Document rezqbKoR9RZx2Q9nywqJQ85ME

PLAINTIFF'S EXHIBIT BRK-233 Mr. Bioh*rd.8ebiA.ii^nlMr v ftqpXojnaat Ooiponaatlen \ Boise Produots Dlvisloa"V' Qonaral Motors Corporation ' 2000 Ferrer Bird. ;--v' Bejton, Ohio h$U3L ' Dmt Mr. Sohaul . . W;-. ,, **. * ' -v *'*. ' '* offloe on February 29,, 7 Mooloaod Is a latter-to' thi^iadttsfcdii;^^ O.B. 8610-22, Irvine Chaae.;s Bda copy la,- for and fils. . -;,n r-'-' .v'V .......'' i-- -V^/:: i If thisDlTlsicn on bo of aatiaUnoo tojour eeapasgr at/any ties on lndoatrlal hygiene or plaaaa lot us know. ' ,. . 1 . % rte lx'*>yv*tn...vi;lt.jr<-*xro/ nrvt;r^>./.~ -) , .. . ; IWtttt'BttffaenjLP.*. last. Cldef Safe fc'Qrgleao BHtfb ;/, Moot Technical Bulletin- ~j Iron Ftona & Boat T v.' ; 'f i i ram Iodoitrltl OoMlMion of Ohio Depertaent* jolldlnf Coloaboa, Ohio 1&Q$ . Ittni F0al J. Bnifu- Beferee Heroh 7* I960 Bit 0.0.861*9-22 LXrrlneGhaae On February 29, 196 * tUit wened* OumtiI Motor* Corporation, 2000 W&nt obeok ocndlttooo enderjftlefc th* abate d|fik aa!becrtara A A ' ` '- tbo Deloo Prodoota WLtiaioo, .ftf., Oajton, Ohio 1*51*01 to ~ nlalnant ` " ctrloa...l................ IccordiJOf to.eoqpvqr reoerda the olaiaaaV* bnployaant eaparlaaoe la a follow 1 /.> . ... '..*"1 V17A2 - VV|3 . .'*s imitor. */w X A| A\--' ' ** U/6/k3 - W\&A\ ihrteit* BUataar. ** *' % y-: ; V" > V*.',/ A ,'itj W.-V - N v 1/16/1*5 - 1/27/1*5 Bailor Operator/: I/27A5 - 5/2*/li5 ^/ 5/21/1*5 - 11/12/1*5 Material BukOar and laeenbler. ' ' ' ../A-r `Ay. .: .'V.TM -; 10/12/1*5- 11/29/W ; Abraaite Hlaatar. 11/29/1*8- 7/31/51 Beach Grinder. 7/31/51 * 5/11/53 .. Spray Fainter Shock Abeorber. ` - v * * * 5/U/53 - 3/7/55 Birr Grinding. 3/7/55 - 1/25/61* Are Ifaldii*. 1/25/61* - 2/10/61* niMM. 2/10/61* - 3/1/61* AreVaidlnc. 3/1/61* - 6/15/61* Ulnae*. '> 6/15/61* - 7/22/66 ire Waldirg 7/22/66 - nihaaayiaai'-day worked* unnu nu nu unnu oifol <- . Industrial Coonlartonof Ohio hi O.D. 86h9-22 - Irvins Chest throb 7, 1968 Page 2 The olslasnt bod a pro s^ploynent physical examination bat that did not inclado a chart x-ray. Ha flrat obaat x-ray we* Wk3 wfam bo was scheduled to ba transferred to a Job aa abrasive blester. Bo we* glm on x-rey at that tSxa and ovary 6 norths until 11 pletures were token. The o<nf>eny pbyalelan reported no evidsnoe of olllooala* Aooordlng to oology records, previous snployoant sxporleooe la aa follows t 1939 - for 2 norths OBI foundry laborer. 1939 - for 2 yoara Dayton Stool foundry Loboror. 193b - 1939 7ar*Uborer> Kentucky.' is on abrasive blaster (the oonpeny Hots this job ail' a sand blaster) tbs elaloont worked at tbs Wcnowsnt Avonas plant of this cowny which they no longer have. It la roportod by a fearanan that stool grit was wood as sn eroding oodtan. It la also reported-that tbs ololnent bod tbs protection of on air lino belnet which,;einoa'O. H. bos an Industrial hygiene departnent, was probably a U.S. BeroauofJflnsf approved belnet. Bo also wore a dost respirator under tbs belnet. 70*or 7SS of bis work was oa Iron osstings. 11though those eastings wore euppoaedto bore boon olaonod of burnt-in sand and other foundry sand* therajny haws boon o slight anount of slllco send on than* The was largely to renove rest* Iho regaining 2$ er 30% woo otrpsIgtrSfc netal. . is o burr grinder ho rawed snail enountt of notel fro* csstinge end other ports. Two dost counts token by Sigh Hins, frigldaira Division, V2V$7 Indloatad a dust oonoentratlon of. 2.1 and 2.9 nililon particles per cubic foot of sir. Bs pointed out that tbe dost "is considered non-tooda vwtsllic dust.* On this visit a dust count was token In . the .breathing sons of an operating an aro welder. It indicate^ a oonoentratlon of 0.1 nlillon particles par cubic foot of air. Since there was little, .or novisibl* dust or funs In the air it was thought that a dost count would be adequate. (This division has .found a narked correlation between dust oennta and funs oonaontretlon at welding operations.) The welding io inert-are with argon used as a shield. Loadnotime which ere.part of electric netore erestocked and put in a chuck where the welding is done sutqaattcally. A curtain Is dosed end the operation is exhausted.''The egnipenaVls Aneeo #6, four torch welder* 2uQ aqp*., 12-18 Volte. One notor pfraiarte,. 8.welds 6* long is welded. Tbs building or roan is over bOO,rtOO*Xl5' to the oelling. It is concluded that thntclalnart night hove had over 3 years exposure prior to 9/ll/h8#to bunt-in silica send dust or send on casting while employed as sn abrasive blester. There Is no apparent source of silica dust exposure after 9/11/1*8. Be probably bed heavy etpoturs to silica duet for two years os a foundry esployweln prior, eaplojnent. w yours, ' DeWftt Huffnen, ?.!. v last. Ghltf log. 4 Bnisos OHifb .. toeiSeoh. BullsUn, Xrm Dust aadfunos ; * w ,i< v.) *' ,< ' j'* < ^ ,, \ *, , **v ^ ` \ . * * i-J. . ,#*V \*r. .* . 4 v. ^ ruin . % v ... x 4.-- 'r . ' *' ' *, ' t ' . nnnn uuuu saw 37