A complete study of the raw material, physical properties, and processing of 734-161 and 38-27E has been conducted. .All data for the years 1976 through 1979 was analyzed in an attempt to detect any significant trends that might explain differences in brake performance between 1976 and 1979 vintage materials. 1.

/fl ex 11C Induslriefi Company n j'u %: ot r ^ T<2> /] 2}/..

United States Patent 4,217,255 Page 2 of 9 vol 83 61074n, Less Abrasive Composition Railroad Brake Shoe Matenal, Adelmann C A vol 85 165565f, Glass-fiber-based friction matenal, Sasahara CA vol 79 8003 le, Fiber Strengthened Friction Matenal, Augustin Primary Examiner Woodberry, Edward M Attorney, Agent or Firm Greenlee, David A , Baker, Jr , Thomas S Parent Case Text This is a continuation of application Ser No 815,637, filed July 14, 1977, now abandoned Claims I claim 1.

L June 20, 1972 Plaintiffs' Exhibit AB 237 IQ: .'

L & S INSULATION COMPANYv.

HlBott* of Hrfflng of Asbestos Stcdy Coesdctee .. -5- Pebruary lh 1973 opening equipment cbooli be expended to Include the: \ - -_ , Teuaton Engineering Company .'"

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'PRODUCT ' ' '* 10/2 5/8 x 1 KAYLO STD CANVAS .1/2x1 - 21/8x1 lxl KAYLO N/W . 4 x 1 KAYLO N/W ' r TM1&10/2 10/2 1 X 3/4 WPRJ SSL - 5/8 x 3/4 (Alum Rands for) 1/2 x 3/4 ` " " ' - 52./4 x 3/4 " ". 4 x 3/4 "" 1/4 x 3/4 " " " Artnaflex sheets 10/2 -Brown Mud 10/3 10 x 1 1/2 Kaylo N/W 3'x 1 1/2 " "2 1/2 X 1 1/2 ` 2x1 1/2 .

ASBESTOS INFORMATION ASSOCIATION NORTH AMERICA 1660 L Street.

>--4-ffilCTIQN MATERIALS STANDARDS INSTITUTE.

August 2, 19711 F.

FRICTION MATERIALS STANDARDS INSTITUTE, INC,, E-210 ROUTE 4, PARAMUS, N.

January 11, 1977 Editor Job, Safety & Health Occupational Safety & Health Administration 3rd & Constitution Avenue, H.W.

ROY F.

PLAINTIFF'S EXHIBIT 0<- ' /v\ 4 HGfi Martinez JAN 2 6 1976 asbestos: rationale behind a proposed air quality standard Leonard Bruckman and Robert A.