Document zzDErN6DONR7mEomK90GGv8j3

/ i. * MMaeracvhU&le*, 1953 PLAINTIFF'S EXHIBIT K-1454 Z. C. Lindstron - EHQ 8iliested 8uperex Blocks - Swindell-Dressier Cap. Bethlehea Steel Pleat, Sparrows Foist, Maryland Ve hare exanlned the brokaa pieee of Silicated Superex Block takes froa the Job of the Svindell-Dresaler annealing ores, Bethlehea Steel Pleat, Sparrovs Foist, Maryland. Is as effort to deteraiae the te^erature to ehieh the block vas sub jected, a 2" eross-seetioa vas cut parallel to the length of the block and vas cut into apprcartaatcly 2" lengths. These pieces vers dried and then subjected $to soaking heat tenperature of lfi00*7 fa 20 hours. After cooling,the blocks vere again weighed and loss is weight deterained. file results are as follows: Table I: Position % Loss in Weight SI * 1:1 l I ?:! 65 )) fHto*t 63.-5 A review of these values and as exaainatloa of the fired pieces show a progressive increase is loss is weight froa the hot to cold end of the block. The cola of the heated speelaens froa hot end of bloek vas slnllar to a block fired at l600*P. Proa this data, ve nay conclude that the block in question vas sot subjected to a tenperature exceeding l600*F. A eross-seetioa of the bloek vas also cut asd submitted to J. C. Radwanker. Research, fa tests. 8. A. Greenberg (Research) ran the Theraobalance teste without drying speelaens. Results of his tests are as follows: Table II: Weight Loss at 2030"? "lot" end of bloek - 6.78 "Middle" end of block - 10.37 "Cold" end of block - 11.75 Teaperatures at which aauplss began to lose appreciable weight (approx.) j Wt. Loss lot Middle Cold - lfi32*p - 1*27? - i2$i*r - 1.7 2.0 2.9 2 Beaearah eoaaludaa wltht- Apparently tbs "hot" end of the block had been 1850 *r. to ao h<e>^ than XJiuJp ee:S. J. O'Brien B. B. Bird J. C. Badeaaker J. R. Robaaa J. C. Cranford, Jr. - ESQ MaBTillC Xsreh 2b, 1953 / f'? * X. e. / SUleated Buperex Blocks - Swladell-Dresaler Corp. Bothlohca Stosl Plant, Sparrows Foist, Maryland Vo have "<"* the broken piece of ftUlaated Superex Block takes fros tbs Job of the Bwladell-Dressler snaosUng ores, Bethlehsa Stool Float, Sparrows Foist, Murylaad. Zs os effort to dstemiae tbo temperature to whioh tbs block was sub jected, a 2" cross sectlos was cut parallel to tbs leagtb of tbs block asd ess cut Into apprortaatoly 2" lengths. fbooo pieces eere dried sad tbea subjected to sosrtsg boat tsagrrsturo of ldOO*? for SO boors. After codling,tbs blocks were apsis welched aaA 9 loss is weight determined. The results are as follows: Table It Pooltloa i loos is Weight a} lj * Middle 5.9 6.9 7.9 7.3 I ) ** 6.0 3.5 A rerlev of these values asd an enalnetioo of the fired pieces show a progressive lacrosse is lass is weight free the hot to cold cad of the block. The color of the bested opeeiaens free hot ead of block was sisllar to a block fired at l600*F. Frau this data, wo say conclude that tbs block is fiiestloa was sot subjected to a A eroee-section of the block was also eat sad subultted to J. C. Bedeaaker, Research, for tests. I. A. QreeSberg (Research) ran the Thcmebelanec testa without drying opeclneae. Results of his tests are as fellowst table Hi *** uo >t gopof "Bet" ead of block - 6.78)1 "Middle" ead of block 10.37 "Cold" ead of block - 11.75 Tsassratures at which saaoles began to lose appreciable wclsht (approx.) lot Cold i wt. loss - lA3t*F - lkaj? - - itjif - 1.7 S.O 8.5 - s- Baoaareh toaaloflao vltht- Apparoatly tho "hot" and of ttao hlook bad boon h--tod to bo 1550*7. than B. JACOBS HJiuJp oetl. J. 0'Brian I. Z. Bird J. C. m-lTTttr J. B. Baboon J* C. Cranford, Jir. MB