Document mqdqG5kmokb1JMbxLJnXpbwp4

J. M. C O N H L)liN 1AL. N ot )u r neutral distribution 01 tepublication.i JOKNS-MANVILLE RESEARCH AND ENGINEERING CENTER ISSO Report No. 431-T-188 Date December 31, 1962 Tide: MATERIAL FROM WALLS OF MOLD CAVITIES AT ZELIENOPLE - Identification Requested by: S. E. Wooley (IID-I4l2 - convicted, MSR No. Z-87) i;.. SUMMARY y- ... 1 JAf* j 1^3 A sample of material vhich accumulated on the vails of the smooldld'ccaavviitties during production of JM-20 and JM-23 IFB at Zelienqple plant vu submitted to the Analytical Laboratory for Identification. After a build-up period of several days, the material finally broke off during 6-tripping of the molds and caused cracking of the brick. X-ray and spectrographic examination of the submitted material indicates that it is mainly gypsum, CaSOl; .2H2O. Skoall amounts of plaster of paris, 2C&SQ1*. .EgO and kaolin, AI2O3.2SIQ2.2R2O, are also present. Sample Identification No. KB-772-129A. Research Tag No. Z-584. Laboratory Index No. A8I-I38-I. Contents: Summary only. Approved by C ttoorffu-^juAj^ N. Thompqhn Reported by J. Sutherland ecc cc: P. B. Proctor - GE E. C. Lindstrom - DH C. E. Ernst - DH M. W. Burleson - DH Att: E. F. Briggs N. J. Kent G. E. Grlmshav R. E. Robinson - Zel H. R. Bennett - Zel A. G. Sinclair - Tor DH L. M. Adamson - Tor DH X-ray by C. F. Rassveiler - GH A. C. Smith (3) J. Q. Trice J. Dec F. L. Pundsack (C) W. M. MacAlpine C. N. Thompson A. J. Sutherland J. P. McGourty Library (3) Notebook No. 2373, P 137; No. 2625, P 87 (9010)