Document gb8ypz0BMJ57DomX8d3MEoVw9

PLAIIMTIFF'S I J EXHIBIT CLAIMED jOZ&> PRIVILEGED BY OCF r ( torch 11, 1952 REPORT OF AKALT3ES OF DJST A5D OTHER KATZKI IlL FROM BAIREVILLE, HEU JERSEY, PLAKT CP, OVEKS-ILLlHOIS GLlSS COKPITI The following samples from the Kaylo plant at ISayreville, Kev Jersey, vore received at The Saranee Laboratory co January 18, 1952* Seaplea of a toospheric duett #1 At aobeatoa fiber!ier.2kl/3 hra. on December X-5, 1951* 2 Oa B flniahing line - turnover poail ion. 7> hra. on Koveaber 15, 1951* 3 At end of B finishing line - offbeorar's poaltlon. 3 hrs. oa Koveaber 16, 1951* 4 At machine vhora lov-den&ity billeta vere being routed to sake pipe covering** lOg hrs* on Koveaber 19-20 and December 1, 1951* ^ 5 Inside freight car being loaded vita roof tile* 4 hra. on December 3, 1951. Saaples of other materials 6 Bulb soaple of aaosite. 7 Core material* 8 fioof tila. 9 Billeta* Batlaatlon of Duet Concentre tion The material cosprising eeaples #1 to 5, inclusive, la atsoephcric duet collected on pleated filter papers with a auction fen that drew in bout 40 cubic feet of air per minute* The materiel. collected van eh&lon off the filter paper and veigbed and from this weight the concen tration of the atmospheric dust vas calculated. PLAINTIFFS C EXHIBIT 12 001 0713 , n e i t o not to o c o p ie d , reproduced o r d is trib u te d except in s a ia o in lo n r lo i aC t o o iid Cvo- n I CLAIMED PRIVILEGED BY OCF (f Ovene-Xllinois -2- Kerch 11, 1912 Estimation ef lust Concentration (Confd) Seaplc estber Yelght of dust shaken off filter, grass. Sampling tlao, hours Volume of air stapled, cubic faet Approximate concentration of dust, eg. per cable foot of air 1 X.3 2.3 $603 0.2 2 13.7 3 6.S 4 1.7 7.5 18000 0.8 3 7200 0.9 10.3 0.C7 5 9.2 4 960C! 1.0 Zt should bo noted that, owing to several por.riblr errors, the l values for the concentration of dust aust be regarded as only tpproxi- aate estimates. By basing the calculations on the weight of dust shaken off the filter, thereby neglecting the saall enouct retained by tho fibers of the filter, ecee error ms introduced, Also, the quantity of air tested say hare differed aoacvbat froa the assused value of 0 cubic feet per alnut*. in M ia s: Cl o. u rt O ra r . USDC SO tFi rhoodruac iaada .a a aa to r a t 12 001 0714 . r o i t e m in n ite ln to r ept r c o l x c a e i t M en ed v. W o n fid triP u t C e t i 0f : d 4 e or in U d I 1 CLAIMED PRIVILEGED BY OCT f Ovone-Illlaole -3- torch II, 1952 V Composition of Saaalce of Duet and Other Materials Tbo coaposltloa of the various samples based upon pctrojrt^hlc cxsnlnatloa aupplecaaied, then accessary, by chcalcsl eselyele and I-ry diffraction exesinetion ir as follow: Et-acle number I 2 .3 4- 5 Quarts iaosite Chryootlle Keylo Carbonate* Limonite Renntlte Opaque Starch - Clue (t) Chlorite 223 70-75 ---- 1-2 2-4 trace tree# trace -- trace 33 trace 5-15 55-65 20-30 -- -- -- ---- -- trace ' 2-43 trace 5-15 70-80 10-20 -- -- trace .-- -- trace 1-23 2-4 1-2 70-80 10-20 -- ? trwar -- 4-8 trace 53 5-10 5-15 50-60 15-25 -- -- 1-2 1-2 ---- trace t Beanie number *6 * 7 89 Quarts Isosite Chryaotlle Kylo Carbonates Limonite Eeaatite Opaque Starch Clue (T) Chlorite . . 233 70-75 -- ---- trace 3-5 trace trace ' trace 133 6-6 5-15 50-60 10-20 trace ---- trace 'trace 4^8* 3-6 2-4 70-80 10-20 trace trace _ trace 2-43 2-4 5-15 70-80 5-10 .~ - trace - trace urt Orour . USDC SO ro p ro d u c o .o , r ncl ie d e t p d a o n c u i . di o el u co to dr rmo ot Pr n 12 001 0715 > CLAIMED PRIVILEGED BY OCT t P Cvena-Illinois - <4 - Kirch 11, 1952 potent The values of 22 end 21 per cent for the quart* content of etaeepheric aobestos dust at the flberirer and of bulk aaoaite* respectively, ore In substantial agreexeat vith the corresporting values of 19 and 21 per cent for alailar esrpleD collected at tbo Sejrreville plant on January 30* 1951* After treating the aaaples chemically to remove the fibrous cosposcnts it was coted that the quart* particles vare Mostly less then 5 Microns in alee, vlth pertidea occasionally up to 30 cicroaa and rarely up to 50 microns in dies*ter* Present also vere splinters of quarts* sen* bein*; 100 microns lone and 10 microns vide* uhich evidently represented a replaceaent of the axosite fibers by quarts. Ordinary petro graphic examination of the untreated samples vill not raved the talk of the quarts present* and for c quantitative ectl.TX.te 1-ray diffraction analysis or chemical treatment should be employed. In determining the aaount of asbeetoa in the aasples chemical* _ petrographic* and 1-ray diffraction procedures vere utilised. The irca content of the tali sasple of enoslte* reported aa Peg0,, v*s 37.9 per cent* and by cosperiag thie value vlth the percentage tof Je^&v for a given aaspla* an estimate of the amount of asoelte in tksvmeaplo oonld be made. Zt should be noted that the bulk earpie of aaoalte was only about 73 per cent pure* since 23 per cent vas quarts, asd other eontaainantk also vere present* The determination of the chrysotile coaponent was based upon petro graphic study or X-rsy diffraction exeatnation or both. The Uses of the diffraction pattern of chrysotile are veal and quantitative values for that ninercl obtained by the X-rcy diffraction method are aorv or lees approximate. TXDsje Themes K* Durban* M.L. Assistant Director 12 001 0710