Document QXnDq2dNGaBgyMjQBLJokQ9w6

V E. I. ou Pontoe Nemours & Company CHAMBERS WORKS olfrwtTi*. (w js*rr mu G. J. Stoppa, W.D., Haskell Laboratory a. Zapp, Jr., M.D., Haskell Laboratory <-*?' L. V. Thatcher, Construction W. M. Deputy, 2ng.-l Construction ?. L McSnaay, Jr., Ada. Bldg. J. L. Hichmond, Ada. Bldg.) Zn ?. Lauraen, Ada. Bldg. J Turn TBjCP*0c AftLa CCOK OflM*SOOO (L-C CZ 2-7 December 9. 1966 C. A. O'Alonzo, M.D. Medical Division tfeaours Building 11400 Wilmington - ASBESTOS The enclosed subject aattsr ns developed to answer your latter of Hovember 8, 1966, concerning asbestos. A. Humber of full-time InaulAtors: Cbsabars Works Construction Engineering MAC * 18 40 Total 58 B. lumber of employees doing part-tiaa insulating Chambers Works Ccnatruction Engineering MAC 0 Total 23 C. Three soft prsvalant type insulating oaterials used: 071 "Dhibestoe" Themaail Fiberglass Wool ' / DUP 0900748 129599 SC-DP-01640 Page 2 December 9, 1966 C. A. D'Alonxo, M.D. Aabestos 0. Spraying of insulating materials: Dens rarely; practically all. alloys "Liapet," an oatestescontaining insulating material in a vet fern while being sprayed. S. lumber of caaes of the following diagnoses: 1. Asbestosls 2. Mesothelioma 3. Carcinoma (among insulators) 0 0 0 - F. Preventive measures or safety equipment required: 1. Sawing insulating materials: All power driven cutting machines are used in a special room. The atmosphere Is exhausted by a Torit Cyclone Collector. Air sealyeis for dust and asbestos. reveals levels are veil below preeently established threshold a|fety limits of concentration, fi-.e million particles/ 2. Removing obsolete insulation: Rons. 3* Spraying insulating materials: This is only done in a remote area far removed from operations. The spraying modality is infrequently employed. 3hen used, the operator wears a simple dust respirator mash and works with the wind to his back. Ail other personnel are prohibited in and around the area at the time of spraying. - - Although relatively simple rtpllee have been made to your questionnaire, additional explanatory inforaat.cn is in order My letter to you of August 19, 1966, spelled out the naaes ci employees who have worked as pipe-coverers, their A.S.D., and their medlcel classifications (or other health status). This covered the years 1950 through 1965* Included was a list of asbestos-containing materials known to be used et this sits. DUP 0900749 120591 Pag* -3 ^ December 9, 1966 C. A. D* Alonzo, M.D. Asbestos To supplement that letter and to elaborate further on each question In your questionnaire, I submit the following: 3. Occasionally aechanica from other craft* are 'used as part-tins insulator*. These sen can vary froa day to day *out practically all mechanics get sene exposure to aibeatoe during field wcr.:. There i* conetant handling, cutting, installation, removal ar.d replacmaent going on to varying degree* by aany ezployses wh ere not classified as pipecoverera. C. It ia difficult to determine, with any degree of accuracy, the moat prevalent type eebeatcs-containing insulation material used. Great quantities of aabestoa-containing materials are used on Cheabers Wonts. These aateriala cone in eny number of sizes, shapes, rolls, drums, mixtures with other nonaabestos-ccntaining materials, vet, dry, povdared, paper, aiding, floor covering, cloth, etc. Thus to assess quantity la difficult when one tries to compare. The type used for the insulation, ita thlchnesa, handling, locale, and means of application are all factors in the assessing. More than one supplier is used to obtain our materials sad the type material used varies with the Chambers Worits Construction group sad the Chambers Wonts Engineering M&C group. Bated on quantities purchased for use by the latter group during 1965 ae compared with 1966, there is a distinct over-all decrease in use in 1966 of asbestos-containing materials. S. With s total of 1,420 wag* roll men in Class II, HI or IV, 100 are so classified for pulmonary reasons. Of this 100, two are pipecoverera. (See letter of 8/19/66.) Since the year 1950 through 1966 to date, we list 1,319 employees es deceased. Of these, 130 died froa pulmonary reasons and of this 130, 53 were from carcinoma of the lung. Of the total deaths, only 5 ware ever pipecoverera. One of these insulators died Hated as "cor d were nonpulmonary causes. w. cTT leeld, Jr., M.D. Director, Medical Division WEffAh Snclosures (3) DUP 0900750 120592 ASBESTOS BBAamG MATERIALS The following is * list of materials wtnc& Chambers Worses Construction is testing on the premise that they contain asbestos. Those merited with as asterisk (*) are known to contain asbestos or use asbestos components in conjunction. 1.. Uhibeetcs* 2. Urethane - 3. Theraobestos* . Thexaastl* . 5. Eaylo* . . foeaglaas* 7. Mineral Wool 8. finish Cement* 9* Powerhouse Cement-* 10; M/V 50 - 11. fiberglass (Heavy and light density) 12. Asbestos Siding* 13. Karaite Board - 14. Unbonded *B* fiber Blanket 15. Asbestos Cloth* 15. Pleor Tils . 17. Limpet* lo. Calsilite. 19. Polystyren 20. U-200 21. Caposite* (foreign Made) 22. Xagle-Picher Cement ("One Coat") 23. Certain Hoofing Materials DUP 0900751 120593 MEDICAL CLASSffICAIIC3 CF VAG3 ROLL E1PLOT2SS DZCSXSSB. 1966 ______________ ClMS II Claas IH Claaa 17 1 Total All Causes 1,043 375 2 1,480 Pulmonary Reasons 36 14 50 ICO Tsar 1950 1951 1952 _ 1953 195* 1955 1956 1957 1958 1959 I960 1961 1962 1963 196* 1965 ' 1966 to data Total _ Total 51 5* 62 *1 67 6l as 73 79 68 79 86 ICO 100 8* 118 108 1,319 Pulacnary 2 '2 5 2 3 a 6 5 5 9 1* 9 a 15 10 18 -2 130 ' CA of Luck (2) (2) (2) (2) (2) (5) (*) (2) (2) (3) (5) (1) (4) (7) (3) (6) Jli (53) * 'lacoa DUP 0900752 -ASBESTOS PURCHASES CB CHAMBERS WQBHS WHICH ABE OSSD BT TIE ESOIHSSEISO MAC QHCOP Code 02-04-003 -0C5 -12-280 -24-045 11-66-CC4 -C08 3C-C3-01C -45-003 -005 -50-002 30-50-244 to -262 Desert tit ion Ufcits Ceaent-Legtcne Ceaent-Lagtcae Gal. Gel. Ceaest-Zhezaotex B Drua-470# Pelt-rooflag-701 45# Asbestos Boll Paper, Asbestos 1/16 Paper, Asbestos 1/8 Lb. Lb. Adhesive Tlbrcus Cere/ Cement-Insulating Ceaant-Leptite-JM Cement-Asbestos . 0el./9 lb. Beg Gel. Beg Covering, ptpe-Ptbergless with Peet Asbestos Us ace 1*65 To Date ;?66 36' 4 39 42 137 Si 344 296 " 1C1 5,362 101 2,561 $ 112 124 13 36 39 133,513 111,976 / J DUP 0900753 129595