Document a4YQp9bpNXzzOy0VMZ00JjwnR
FILE NAME: RT Vanderbilt (RTV)
DATE: 1975 Apr 18
DOC#: RTV221 DOCUMENT DESCRIPTION: J-M Letter to RTV RE Meeting About Sharing Data on RTV Products with Data
ri\rr.C'r/s.*
Johns-M anville Products Corporation
Filtration & Minorai Division
Groenwood Piata Denver, Colorado 80? 17 {303) 770-1000
.April I, 1975
375
'1
Mr. Hi B. Vanderbilt, President R. T. Vanderbilt Company, Inc. 30 Winfield-Street Norwaik, CT 06855
.
-
Dear Mr. Vanderbiit:
A-in.meeting -with us earlier this ..week is
:
Vas;./-iTO^prtaht.
V i o r `you;tb urirergfehiior^
\talc labeling and .the various- 'actions-.'we'".are currently
taking in the. market place in this -regard.
Our intent xn sharing-:,with; 'ypu -our;,ranalytica,lvdata on
your products is'an attempt /tg::>|>'e;?Hi-p|-l .^nd'-'is most
certainly friendly. . inr-;thi's--;ie)gj;d>. ;ir.>we^dah'/-'iri ariy
way be of assistance t o -your tchnicai.people .through-
an exchange of information andsimples we iwpuid be glad
to do so. If Dr/.tnimpsn: wotil<^oare. to'-,meet,'-with our
Research people':to *r v i w T p u r ifidings we';.>wdid be
pleased, to arrange thiVfdr.-him. This -.ikindiof :techni-
M
` cal exchange: would be .helpful yto ;both companies .'-
Following our meeting
1 have.freviewed, with
Dr. Paul Kot'n,-'MicSi^li^sc^tl;Qr^ToKns^Miiville
orp. , the varibuis---p<iints'-..w -.di^'diissed.'-'
indi
cated that if you. so dsire h'jWoud gladly; meet with
you and various members, of your.staff to describe the
. medical aspects of the. .situation. si
Will you please convey'my thanks to the other members of your group who attended our meeting on April 16.
Sincerely, .
-..
vl
R. S, Lmar, Manager Filtration arid Minerals Growth Development
Division
dia
CC :
Paul Kotin
Fred Puridsackij
imi
bcc :
S. W. Schulmeyer
H. R. K'fe
RSL chron
file P.. T. Vanderbil
file
C. d. Sul.ewski
P . A.. Martinson
R. p. cSBStr;--''
W. C.
AAA07f
M CRMC-BEV-000375
R. ;j; Liimar- - R&D 'V, l'A V/olkodolT - li&U /
O.tUr. October 23, .197^.
.
iiisLi"iuutior* on Reverse Side
TEM AMD SELECTED AREA DIFFRACTION PATTERNS -OF ASBESTOS MINERAJiS IN FOUR TALC SAMPLES PRODUCED BY R. T.' VANDERBILT COMPANY
3. At- your request, I was able 'to contract time on the Philips 200 .
..e..aua'an microscope at Denver Research Institute to confirm by
sitided urea diffraction patterns", the presence of-clirysotile, .
antbophyllitc and tremolite in all .the R. T.- Vanderbilt-talcs
tiesi.',.;uabe<i iiyi.al 200, Nylal t00', Asbestine 3X, and Asbestine 32i>X
. (pi
refer !,o m.y letter of October 9, 19T`i, viridi :is. based
; Lni eally on FDA -optical,, methods and the non of our. RCA electron .
' tu eroseApes' to confirm chrysotile). It was felt that selected'
'area diffraction patterns of the asbestos minerals using the
1'i.iLip;. .200 would lend positive identification ~ a.type of
analysis, which cannot.be done on our RCA EMU-3D model.
Table-No. 1 not only identifies samples, but.also identifies all TEM prints and'selected area diffraction patterns of the 33 prints .attached to.thib '.let'ter.; The TEM plates, are always on file. The:microscope, .'constant:(.L .-A:); was derived by "averagi; 21' microscope constantvv&lAi'e;spbased'"'oh;lines of. Au-and-Pd. The microscope constant is: ;.', .'.. " ..
L A ' = UJl51 A cm i 0,003.
To calculate'd-spacing in Angstrom" units, the. following formula
was ubed:
..
b A (A -cm) . ' .spot pair.r a i x i f m)
pacing .(A)
3. Cnrysotilc, anth'ophyllite.,,:.and treniolite v/ere all found in e.ach. of the four R. T . Vo.hdeiT.<ilt...taic. samples Particular, data for.-each' siiin'jvle are. found, in Table No* 1'. and appropriate attached electron diffraction patterns.
\f.
/ 't- ' .
"V. E .V/olkodcfff ' `
DC. Attachments-
`
.
4
D.ifitributi or*
H.' IV C a r ter* .
~ UK '
Jl. Mi. Meaner
. - bli .
Paul K o t i n , M. D.
" - iw ..
V/..B. Keitz'e
-
.K. J . C o lo n , J r .
fiN
ih- Cwallow
- JiH
A. C. F. Kink b i n e r , i l l
5W
J . A, McKinney. .
- 5w. /- .
H-.. H, K eefe*
2W
l A . Martinson
- 2V/.
(,* J . Cule.wnk 1 .
. - 2W
W... ,.. VonDerbeek .K,, (. lU ede '
- 2S ;* ' . r 2S !
. L
J.. P W. C S.. Sj R. S Vi K
Printe attached .only, to-those'names followed by asterisk
P *>*
C R M C -BEV -000275
.TABLE 1
TKM Tabulation of Micrographs and Selected Area Diffraction. Patterns. of Four Talc Samples From ft. T. Vanderbilt Co.
Seioc ted Area
'/diidcj-bi it
. T-FM-Plate ' l)jf fraction
VO .
2
Mr.. in-;si ri.at.-jon Mo. , Magnification Pattern, 353
Reni ark:
.\J-' ' Yt2b>-1 *V it: v/ii'Yb"!
by tal* 200 My tal 200
3 . ta: -Ytftb-.i. 'flyLai 200
t .HC-..7t2tb~:i.' ` Uytttl 200-
2301A, .11,0003 ' 2317A, 16,0003 .2305A, 22,0D0X
- 2 3O 5B.
3 .'. if; Yt.2Y;2-:L .byta'l '200 ' KS 71,2V;-i. by lad- 200
2306A, 22,G00X
7 -Ho Y t P b ^ l Myfcal 2-0 ' ` 2 SOYA, 2 2 ,OOOX
S
V f 7f2lb~i Ny tal* 200 ' : --'.
*
r'2 3 0 6 B
-- * , 2307B
Clrysotil e f ..or
Pattern-is .os' wsor/b
.fiber iii 2305A ,
'hrysbtiie' '' " '\;-r
Anthophyllite fiber
Ant-hphyllit*- fvb..
in 230oA .
Tremoli te f.iwe*
Treruolite fin-n* .
2307A
.
u
m b Yt2-39"2 Ky-ta'i tOO
<o : i'-.f .Ytbbb-C bytal tOO
.2300), Il,0G X 2318c, 1 6 ,OOOX.
ii "i,c 7t253~2 flytal too ; 2308A,' 22,0003
it
YtP33-:2. Mytal tOO
, .:
i / *>'-> ft<:35*-2 Mytal tOO. It "ft.c Yt255-2 ilytal tOO.
IV f:'Yt255-2 Nyfcal tOO-' . !.<:>' ..-.2; Yt253~2 Mytal tOO
2309A, 22,0003 -
2310A 23OOX -*
4M -
-2308b
. . 2309B
2310B '
Chrysotile !" Pattern .of'C.ryrt': :ie
above
-
A n t h o p h y l l ' .5 ./.*
Pateriv of Ar.tisopiy-11-*ta
bve i
A
Tremlitc fib-,.
. b
Patterb ,of
>
above
;v ss YtfbY-l Asbestine 33 -2303), 11,0003
4M
if.
... Yf2 5 5 -3 Asbestine ,3X 223190.,- i6:,ooox
y
V Yt2o5-3 Asbestine 3X: .231TA i -22 ,ooox ' ;
- --
;-'u i ff Y 1 25.5-3 Asbestine 33
4 *| r i
<;; 7 t235-3 Asbent-ine 33.
22 . :2 7'<i>51-3 Asbestine 33
2312A., 22.,000X .
~ 2 3 IIB ' .-
2312B
as Y^'255-3 Asbestine 3X 2b- . 2\i'Y1*2 55-3 Asbestine 33
2313A, -22,0003
TM .\
' '
-- '23133
Chrysotilc .*<-.*
bottom .
\
*..-/
PatterniTof Chfyr.oti 1< .-.
above
Anthophylli ie /i .
Pattern of Au -;- i l
above
. :j
Trmolite fi -
Pattern of V.- 0.12te
above
2b
sii 71255-1 Asbestine 325. 230tA;, ;ii.,qoox..
Po'. i\j 'ft2 5 5-1 Asbestine 325 2322Y.18 7 OX
-
Fiber is coniTa.ed Ciirysb^ tile arid''Ampi,iIk.1o ,
C R M C -BEV -000276
- 'Wiits*?V- Vi^ j. U" :.in-\
Tab La 1. con Linuud
Vitader biI c,
TEH Plate
L'v.
no. bosi'gnation. -No.-, Magnification
i'-T PC Yt?55-i* Asbestine 325
i.O ,i;C 75<'55"^' Asbestine.325
py 'he
Asbestine 325 - -
30 ; .It; 7^255-^. Asbestine 32-5 .2315A, 22.,000X
.*1 j;C 'pC'55-^ Asbestine 325
3:.' ' .0
Asbestine '325 23l6A, .22,000X
33 no Y^2 5 5 ~l. Asbestine-325
bc.LecLed /iVcti Piffraction
Pattern, 35X
2322B
~ 231 iB
Chryr,oti 3 e p.iLi.er/, superimposed on Amphibole p;;.,a_T. Ch.rysotile fi bei.. Pattern of Chrysotiie above Longest fiber is
231.5 2316b
'Pattern of Anri.'-.-Uxli ito:
above Largest fiber. I.n.
Tremolite
;
Patternof Tromol!to
above
