Document RGJnvyo50enRXYY18yL0xDjE
UNION CARBIDE BELGIUM N.V.
Received DEC 5 1967
J/, FRANGOS
1415 /TJH/MLF
BRUXELLES 6, 30 November, 1967
140, AVENUE LOUISE
Mr, F. Dexter Union Carbide Corporation New York Office
Dear Frank:
*
Ac you know we have been trying to keep close to the asbestos toxicology work in the U. K. Fred Mumpton at Niagara Falls arranged for some work to be carried out on a sample and gave us a report on this. Ian Sayers took the report to the laboratory group in the U.K. which is co ordinating this work. I am enclosing q^copy)of his hand written report for your information. Whenthey come back to us for additional analytical work we will pass it on to you. There continues to be a great amount of concern about this subject and we are going to have to learn to live with the problem in the U.K. So far there has been no indication of it being pas8ed on to the continent.
In this report Ian passes on the request for permission to publish our data and X would like your comments on this. Even if you agree we would try to find out in more detail the conditions under which this data would be presented before agreeing directly with them. Perhaps it would be better to have this sort of publication first approved by Carl Dernehl before we finally agree. Also I will ask Ian to follow directly on obtaining the spectrographic analysis method.
If you or any of the others receiving this letter have any comments X would welcome them.
Best regards,
Very truly yours
A 03 1 51
UCC 015631 THOMAS J. HALL t
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UCC 015632
A03 T57
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INTERNAL CORRESPONDENCE---------(t <fcT'37H2---------------------------
UNION CARBIDE CORPORATION 270 PARK AVENUE. NFW YORK, NEW^Bj^l^
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Mr. C. E. Met ten Chemicals & Plastics 2770 Leonis Blvd.
Los Angeles, Calif.
90058
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M. B. VerNooy - TT W. J. Fitzpatrick - LA W. G. Farrell - LA John Meyers - King City
d.i. oriniA/iR0
March 21, 1970
ncQicdl UepArtoisnt
APR 6 " 1370
UCC* CALIDRIA
king city, ca.
Answering Isttsr tfdfs
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Toxicity of Calidria Asbestos
Asbestos has practically no acute toxicity regardless of its type or form. The harm associated with asbestos is from the fibrogenic properties of the inhaled dust. This usually is seen only after prolonged exposure measured in terms of 15-20 years although cases rarely will occur in less time.
Because of the rather unique structure characteristics of Calidria Asbestos, there was concern that it might be unusually fibrogenic and perhaps cause an acute asbestosis.
To test this possibility, Calidria Asbestos was injected into rats and rabbits intraperitoneally using a standard long fibre asbestos as a control. The results of this test showed Calidria Asbestos to be slightly more fibrogenic than long fibre asbestos but the difference was not so great as to suggest an unusual degree of hazard. From this I conclude that the same precautions to avoid breathing asbestos dust must be observed whether the dust be from Calidria Asbestos or from a standard long fibre form.
Some people believe there is an association between exposure to asbestos dust and the development of lung cancer and mesothelioma. There is no information regarding Calidria Asbestos in this respect as yet. It would be prudent to assume that Calidria Asbestos will behave like other asbestos in this regard.
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C. U. Dernehl, M. D. Associate Medical Director
UCC 015633
A03 158
Union Carbide Corporation. Mining and Metals .Division
270 Park Avenue New York,. Hew York 10017
`ebruary'd, 1*160
Hr. Peter Ji. Cheston Union Carbide Limited 0 Grafton Street London, England
Dear Peter
Your suggestion that we consider including "OK paper industry" eoa#int3 in our General Sales fleeting is well taken -- and I plan to review the notes with Ian Sayers.
apropos of your letter on toxicological studios relative- to asbestos - wo have revlowed the two excerpts you sunt us with Dr, Carl Parnehllie counsels that the papers "do not by any inoane present incontrovertible proof nor do they profess to do so." Further: "Our position should 'remain that in United States experience there has been no increased incidence of , lung cancer v/hen the threshold limit has not been exceeded."
From past publications, wo have also noted the references to organic contaminants, with the thought that proof of absence of polycyclic cromati.es in Union Carbide asbestos might be useful, We are planning sou*- ?xtractiou studies and analyses for J,4-benp'.o(a)pyrene by techniques erupJ.t?yad at South Charleston. We will let you know the results, probably in an appropriately written statement by Dr. Dernehl,
The matter of soft papers, facial and other tissues, has been a re curring subject with us. Primarily this is a question of slcin sensiti* ition. While the over-all statements by our Industrial Hudlcina and Toxicology people should suffice -- we have given thought to '-'patch teste," which, incidentally, cost appreciably to run. It would be meaningless to conduct such tests with paper containing UCC asbestos, since the other coaqpotienttf of the furnish bear on the results. Hence we are considering patch tests using straight asbestos -- which, of course, would absolve only our product. The other components (including, as you know, a variety of organic compounds) of specific furnishes would have to be considered by the paper company, involved. We shall let you know our plans.
Very truly yours,
A.E.Pufahl.'dk
Acc: M. P, Reiehard '/x. F. Frangoe X. F. Gray (Australia)
UCC ,0,15634
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UCC 015636
A03 16 1
UftiOM CARdiDE CORPORATION
270 PARK AVENUE, NEW YORK, N. Y. IC017 '
IV. 20. CAL UEPAKTMENT
June 7, 1967
Dr. T. J. Hall Union Carbide Europa A.A. 46, Rue Du Rhone 1211 Geneve 3 Suisse
Dear Tom:
,
I have reviewed the report, "Asbestos As A Health Hazard In The United Kingdom'1;, prepared by I. C. Sayers, and in general I find that it is reasonably accurate. I do not attach very much importance to the data on the incidence of asbestosis and death from asbestosis and cancer because these are merely tabulations of events and do not take into consideration the numbers of people who were subjected to the possibility of the event occurring.
We had been interested In the possibility that the short fiber Coalinga product might have a greater hazard than the more conventional forms of asbestos because sub-micron silica has been known to cause a rapidly progressive silicosis after exceedingly brief exposure. We were concerned about whether the Coalinga material with its exceedingly fine fibril diameter might have a similar effect in causation of asbestosis. We therefore made some preliminary studies in which the material was injected into the belly cavity of guinea pigs, rats and rabbits and also was injected intratrachealy by a method which distributes the asbestos throughout the
lungs of rats. The materials injected were the standard fiber, a refined fiber.and a long fiber obtained from Johns Manvilie fof purposes of comparison. In the in jection study the^Coalinga refined fiber produced the most severe reaction in the belly cavity, whereas the
A03 1 62
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UCC 015638
AU3 163
May 9, 1969
Mr. T. Frank Tobin Plant Manager Stedfast Rubber Co., Inc. 50 Oliver Street Horth Easton, Mass. 02356
Dear Mr. Tobin:
The enclosed "Asbestos Toxicology Report1' explains some of the facts concerning handling of asbestos. Our CALIDRIA Resin-Grade 144 Asbestos is nearly pure chrysotile asbestos. A different type, known as crocldollte, is believed by many authorities to be implicated in causing mesothelioma and lung cancer. Our asbestos products do not contain crocldollte, which is a product of South Africa. A connection between chrysotile asbestos and mesothelioma or lung cancer has not been clearly determined.
The Federal Government recently promulgated new occupational health standards under the Walsh-Healey Act, applying to noise, dust, gases, etc. The new standards were published In the Federal Register, Vol. 34, No. 12, Jan. 17, 1969. They apply to firms doing business with the Federal Government, and if your company sells directly to a Federal Agency, it may be well to refer to them.
We require thafall employees exposed to asbestos dust in excess of the thresh old limit value wear a respirator with a U.S.B.M.-approved filter for pneumoco niosis-producing dusts. The particular respirator we use is a Willson Monomask, Style No. 600A, U.S.B.M. approval No. 2170.
I hope this will answer your questions satisfactorily. Please let me know if you wish any more Information.
Yours very truly,
J. A. Riddle Plant Manager
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UCC 015639
AU3 1 64
STEDFAST RUBBER COMPANY inc
of -- COATED FABRICS
FOR THE SHOE INDUSTRY
Sfac&yuLea
MATTAPAN ' MASS' north EASTON'MASS* GRAN BY'QUEBEC'CAN AO A
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MATTAPAN BOSTON MASS. 02126
TELEPHONE 617-298-1456
U.C.C. CHLM. a PLASTICS i/~ r'Tv r 'C
Union Carbide Company Chemical Division 300 First Street Needham, Massachusetts 02192
MAY 2, 1969
Gentlemen:
During a recent safety survey by our insurance company, they were very much interested in the material we purchase from you, namely; asbestos resin, ^ey would like to obtain some information from you regarding the asbestos content and if protective respirators are required when handling this material.
I would appreciate your comments, in duplicate, addressed to the writer.
TFT/FTH
T. FRANK TOBIN PLANT MANAGER STEDFAST RUBBER COMPANY, INC.
50 Oliver Street North Easton, Massachusetts
02356
UCC 015640
MJ3 16b