November 16, 1978 Mr.

August 20, 1974 / RE: Industrial Hygiene Survey FPG - Winchester Dear Charles* , _ ..

ALUMINUM COMPANY O nA fn,/'ti 5c3" >r~<~'l i; ^f'' rA\ ALCOA, ; ELF'S NESS EC AL 1978 April 04 Mr.

MEDICAL DEPARTMENT 1 ASBESTOS Medical Aspects, Records, etc.

*- FRICTION MATERIALS STANDARDS INSTITUTE, INC., 210, ROUTE r4, r'rtiflwua, Me* otnsci 3w -LT ( N NO. 423 February 18, 1972 PLAINTIFF'S EXHIBIT AB-229 To: ALL MEMBERS SU8JECT: Demonstration - Membrane Filter Method for Airborne Asbestos Measurement ' By: iV.

\ /' TIUMMI icon C4C-0440 FRICTION MATERIALS STANDARDS INSTITUTE.

Btancarcs '^s: mini/te?

tG E L S 1H E E I, M A N IIE lM .

I 1 INTERROGATORY NO. 65: 2 At any time prior to 1972 were any tests or studies con 3 ducted or sponsored by defendant to determine: 4 (a) The level of airborne dust or fiber concentration 5 incident to: 6 (i) Arching, sanding, clipping, grinding or bev 7 eling defendant's asbestos-containing products: 8 (ii) Placing the products on/in motor vehicles and 9 other machinery requiring such products; 10 (iii) Tearing down the product during repair and 11 maintenance functions; 12 (b) Whether long-term (5 years or.more) exposure to 13 products containing asbestos below 5 million particles per cubic 14 foot (mppcf) might cause asbestosis or expose the user of said 15 product to an increased statistical risk of developing: 16 (i) Bronchogenic cancer; 17 (ii) Mesothelioma (pleural or peritoneal); 18 (iii) Gastrointestinal cancer; 19 (iv) Asbestosis. 20 RESPONSE: 21 No . 22 INTERROGATORY NO. 66: 23 Was the concentration of the airborne asbestos fibers prior 24 to 1972 at job sites at which defendant's asbestos-containing 25 products were used within the prescribed threshold limit values?

June 29, 1972 He* D.

PLAINTIFF'S EXHIBIT ssew 4'*v DATE Julius Nemeth Henry Ruby April 6. 1976 INTRA-ORGANIZATION MENORAN RS-7 _________________________ j)/ /(/?

Heating Systems Boilers Steel Cyciotherm Division United States Radiator Corporation Sales and Executive Offices Oswego, New York Factory Distributors throughout the United States CYCLOTHERM STEAM AND HOT WATER GENERATORS Operate on Cyclonic Combustion prin ciple.

Products Company VRE P. o.

SJu\ Johns-Manville Internal Correspondence To: All Plant Managers Date: April 14, 1977 From: T.

SJu\ Johns-Manville Internal Correspondence To: All Plant Managers Date: April 14, 1977 From: T.