Document R2KdkQorrGKq9ZwMgwM18D7pV

, ..'..vis?, McCool - - - E. R. Gleason LL5- fUij D/0020, Bldg. 5-H D/8506, Brecksville R&D Center Dec. 6, 1974 The MSA efficiency samples received November 18 (log 42) have been analyzed for~acrylonitrile. ~ The results are summarized in the table below. Sample No. Mg VCN on tube MC-35 36 37 38 39 40 41 42 43 1.35 - ------------- -1.85 1.78 1.82 1.36 --------------- 1.55 1.83 1, 21 1.14 Mg YCN recovered 0.85 1.3 1.3 1..3 0. 95 1.2 1.5 0. 96 0. 82 % Recovery 63 70 73 71 70 77 82 79 72 cad cc: RfcD Files 502^ EMZABETH R. GLEASON TO O tSUS?' >oaiu.s nrv. ii / him. in u.s.s, __ ( BFG27255