Document DD0wdQrLaDKBOy69qKM20Q444

<2 I --: c. > Referring further to my letter of foce.oher 13, giving J-M roco'n.u-rr.n.-'tions which you ver? re<'ue`>:.c-d to submit to the Fftoornl cp-rcificr* tier, domra for revision ot' hX .-1-554, we would suggest thit you withhold this for the time vei::g cue to a proposed ACT. I suheomitte-e .no-sting -ot which the M-.-rr.e-2in n:.c-cl fici. ti-m for AST-! vtU prohofciy btf discussed. Copy of the attached letter from dr. Frederick indicates his co.o-.-.-ny vouic require other changes and it may bo that other '.sou-. facturc-ra will have further co-aments which caa bo discus *ed st this forthcoming meeting. Since the M.i^nesie manufacturers will be present *t this subcommittee meeting coiled by Mr. Streecy, they will no doubt vent to discuss pro,.oced chnrijo?. on the /vSTi Magnesia specificstior.a C-319 t'r.6 0-3*0. Many of the properties nnc values for these specific tinr.s would he tne s^me as for the Feueryl specifica tion. Member? of The Magnesia-Silica Insulation Mnr.ufKctur^rs r-jc-oci..tiers previously agreed on these ctaaros in trie Moroieais s> ccif lo" ticn, which the7 will find on referring to letter of the writers to Mr. Smith d.;ted September 30, 1957* Ixovev^r, further changes any be required r-.t this ti.r.e, so that nil jsnr.ufacturera will probably v>mt to cc.ue to this nesting prop:, red to : iscuss proposed changes in both tho Magnesia and tSie Calcium Silicate specifications, AST--' and Federal, PCF ca R.C. Pnrlett cc J.3. Jobe - JohnP-vUrwi 11a, N.I., C.i. :le Vyvr-r - J;>hr.&-M* r.vi 11 c, N.T., !4.Y. 1), c', Vin^erter - Johrrs-Me.r.vi i le, ??.*/., 3.1, V.D. C.schcs - Johns-&!invillo, H.Y., m.i. J.C, Crawford, Jr. - Johns~Mvnri'.lc,* `J.T., 3.2C. J.F. lynch - Jo bn Danville, !*.*., ?i,T. V.C. Vioblftd - Johns-.Manville, Vmsh. f .C. E.J. 1 avis - J sins--Mr.rvl 11 e Research Center, Manfille, X.J. 0*V. Smith - EJiret JiignosiA Harufectijrir.g Co., Vnlley forge, ?**.a L.T. Chontej^itandet Cork Corp., North -Bergen, ii.J* J.V. Corcrey -- ?.bco Products Inc., S.., R.T. C.R. Frederick -- Ke&sbey h Mc-ttiaon Co., Aabler, Pa* H.A. Cook - The Philip Carey Manufacturing Co., Plymouth Meeting, Pa* --'b'tM.J. Pucdock - Cadvalader, \ickerahasi Sc Taft, .%*.*, N.T. J.j. f-'j'Acrrlc"" The M \3:rff??i.>.rLl&t- I" a---tlu.i 'li.-rr." / xen., V; nhi f ! tC* R.H. Heilnsn - Mellon Institute, Pittsburgh, Po. M*H* Streepy - Kecsbey & Mattison Co., Ambler, Pa.