Document npGwG8OEVram51B2ge4Oyq791

FILE NAME: Talc (TALC) DATE: 1973 Aug 31 DOC#: TALC458 DOCUMENT DESCRIPTION: Letter to FDA from J-M a/31/73 . DK. ALEXANDER H. SCHMIDT COMMISSIONER POOD AND DRUG ADMINISTRATION `5600 FISHERS LANE ROCKVILLE, MARYLAND 20852 JOHNS-MANVILLE APPRECIATES YOUR PROMPT RESPONSE TO MR. PERRY ING ASBESTOS IN FOOD AND FOOD PACKAGING MATERIALS UNLESS THE TALC IS 99.9% FREE OP AMPHIBOLE ASBESTOS FIBERS AND 99.99% FREE OF CHRYSOTILE ASBESTOS FIBERS, THE MERE PUBLICATION OF SUCH REGULATIONS IN THE FEDERAL REGISTER WILL CAUSE IRREPARABLE AND IRREVERSIBLE HARM TO JOHNS-MANVILLE AND OTHER COMPANIES IN THE TALC INDUSTRY. WE UNDERSTAND THAT FDA IS PROPOSING TO USE A TEST METHOD EN TITLED "MICROSCOPIC; DETECTION OF ASBESTOS IN TALC" FORMULATED BY ARNOLD E. SCHULZE AND WILLIAM V. ElSENSERG TO DETECT THE PRESENCE OF ASBESTOS IN TALC PURSUANT TO THE CONTEMPLATED REGULATIONS AND THAT FDA IS OF THE OPINION THAT ALL "FOOD GRADE" TALC WILL PASS THIS TEST USING THE DESCRIBED METHOD. JOHNS-MANVILLE*S RESEARCH CENTER HAS ANALYZED OUR TALC USING THIS TEST METHOD AND OUR TALC DOES NOT PASS THIS TEST NOR WILL THE TALC PRODUCED BY MANY OTHER COMPANIES PASS THIS TEST CRMC-HT-TALC-000089 WE HAVE OBSERVED MARKED AND SERIOUS INCONSISTENCIES BETWEEN THE PROPOSED SPECIFICATION AND THE PROPOSED TEST PROCEDURE. IN THE INTEREST OF FDA AND THE INDUSTRIES XtIVOLVED, THESE INCONSISTENCIES SHOULD BE ANALYZED AND RESOLVED PRIOR TO PUBLICATION OF ANY REGULATIONS. THE PROPOSED TEST WOULD REQUIRE A DEGREE'OF PURITY WHICH EVEN THE FINEST GRADE OF ANALYTICAL REAGENTS CANNOT BE ASSURED OF MEETING. OBVIOUSLY WE ARE NOT COMMUNICATING EFFECTIVELY OH TECHNICAL AND SCIENTIFIC PROCEDURES. SUCH COMtT'NICATIONS ARE ABSOLUTELY ESSENTIAL IF .WE ARE TO AVOID INADVERTANTLY CAUSING IRREPARABLE HARM DUE TO A LACK OF UNDERSTANDING. WE RESPECTFULLY SUGGEST THAT THE MEDICAL AMD SCIENTIFIC LITERA TURE IS DEVOID OF ANY EVIDENCE WHATSOEVER OF A CAUSAL RELATION SHIP BETWEEN THE INGESTION OF TREMOLXTE {THE MOST COMMON ASBESTOS CONSTITUENT OF COMMERCIAL TALC) AND ANY INCREASED INCIDENCE OF GASTROINTESTINAL CANCER AMONG INDIVIDUALS EXPOSED FOR PERIODS IN EXCESS OF 25 YEARS TO TALC CONTAINING UP TO 70% TREMOLITE. WE SPECIFICALLY INVITE YOUR' CAREFUL ATTENTION TO THE EPIDEMIO LOGICAL STUDIES CONDUCTED BY DR. MORRIS KLEINFELD ET AL (1967) "MORTALITY AMONG TALC MINERS AND MILLERS IN NEW YORK STATE. ARCHIVES OF ENVIRONMENTAL HEALTH 14: 663-667 AND TO DR. KLEINFELD`S LETTER TO JOimS-MANVILLE DATED JANUARY 24, 1973, A COPY OF WHICH WAS ATTACHED TO JOHNS-MANVILLE1S COMMENTS TO FDA DATED APRIL 20, 1973, AS EXHIBIT G; . ' ' ' - 2- ' - ' CRMC-HT-TALC-000090 T1IE SOLE EPIDEMIOLOGICAL STUDY OP WORKERS OCCUPATIONALLY EX POSED TO TREMOLITE WAS CONDUCTED BY DR. KLEINFELD. BE CONCLUDED AS FOLLOWS 2 . "WITH REGARD TO CANCER OF THE GASTROINTESTINAL TRACT AND PERITONEUM AMONG THE TALC , WORKERS WE DID -NOT FIND ANY SIGNIFICANT DIFFERENCES BETWEEN THE OBSERVED AND EXPECTED VALUES IN THE OVERALL AND SPECIFIC AGE GROUPS STUDIED. THESE FINDINGS DIFFER FROM THOSE OBSERVED IN ASBESTOS INSULATORS WHERE A SIGNXFICAliT INCREASE IN THE OBSERVED IN CIDENCE OF GASTROINTESTINAL MALIGNANCY WAS FOUND I N `THE OVERALL AND SPECIFIC AGE GROUP STUDIED BY OS PREVIOUSLY. THE ASBESTOS DUST EXPOSURE AMONG INSULATORS IS CHIEFLY CHRYSOTILE. OUR FINDINGS AMONG ASBESTOS INSULATORS WAS SIMILAR TO THOSE REPORTED BY SELIKOFF, HAMMOND, AND CHURG." STUDIES CONDUCTED BY SELIKOFF AID OTHERS AS TO BIOLOGICAL EFFECT OF CROCIDOLITE, AMOSITE AND CHRYSOTILE CANNOT BE VALIDLY RELATED TO TREMOLITE WHICH IS PHYSICALLY AND CHEMICALLY DIVERGENT FROM THOSE MINERALS. IT WOULD BE SCIENTIFICALLY IRRESPONSIBLE TO INCRIMINATE TREMOLITE AS A HEALTH HAZARD TO THE GENERAL PUBLIC ON THE BASIS OF THE SELIKOFF STUDIES AND IN THE FACE OF THE FINDINGS OF THE SOLE SCIENTIFIC STUDY ON THE QUESTION WHICH CONCLUDED NO EXCESS OF GASTROINTESTINAL CANCER AMONG WORKERS OCCUPATIONALLY EXPOSED TO TREMOLITE TALC. IT MUST BE NOTED - 3" CRMC-HT-TALC-000091 rtUAT W T O STUDIES INDtCATING AMT S O W OF EXCESS OASTnOIWES- Turn, CANCER RENTED TO CSOCIDOLITE, AMOSITE AMD CHRYSOTILE AMD MOT TO TREMOLITE. AS DR. GEORGE WRIGHT CONCLUDED IH HIS PAPER ATTACHED AS EXHIBIT E TO OUR COMMENTS, IT WOULD BE MOST UHSCI- ,, -ACT NOT AT ALL CORRECT TO ASSUME THAT I B K K ENTIFIC AND, IN FACT t NOT w HAS THE SAME PROPERTIES IN THIS REGARD AS DO CHRYSOTILE. CEO- /srrtm.TTE. AND AMOSITE. ,, OR. >10,' STATES IN BIS PAPER. 'THE EVIDENCE AVAILABLE AT this t im e clearly indicates t ha t the role of asbestos in CARCINOGENESIS v a r i e s f r o m i m p o r t a n t TO NON-EXISTENT .d e p e n d e n t ,,PON THE VARIETY OF FIBER AND ESPECIALLY UPON T H E .CIRCUMSTANCES OF OCCUPATIONAL EXPOSURE. THE ASSUMPTION THAT ASBESTOS ALL OF ITS VARIED FORMS AND USES IS UNIFORMLY CARCINOGENIC IS NOT VALID..... BOTH TREMOLITE AND ANTHOPHYLITE HAVE BEEN SHOWN TO ttthuj aw rvCESS OF EITHER MESOTHELIOMA BE FREE 0? ASSOCIATION WITH AN EXCESS ur OR GASTROINTESTINAL CANCER." . ME ARE SENDING TO YOU b y 'MAIL COPIES OF DR. WRIGHT'S PAPER AND DR. KLEINFELD'S PAPER AND. LETTER TO JOHNS-MANVILLE. Mirvqt<5 OF THE MEDICAL AND WE FIRMLY BELIEVE THAT A THOROUGH ANALY. I SCIENTIFIC LITERATURE ON ASBESTOS AND HEALTH WILL LEAD FDA TO t h e CONCLUSION THAT NO FURTHER REGULATIONS OF THE USE OF TALC CONTAINING TREMOLITE IN FOOD AND FOOD PACKAGING MATERIAL IS WARRANTED. CRMC-HT-TALC-000092 YOU ARE NO DOUBT AWARE OF THE IMPORTANT JOINT SYMPOSIUM OF THE EPA AND NEXUS CALLED BY DR.' SELIKOFF FOR NOVEMBER 19 AND 20 ON THE EFFECTS OF INGESTION OF INORGANIC PARTICALS AT WHICH ALL LEADING SCIENTISTS IN THIS FIELD WILL BE EXPECTED TO ATTEND. JOHNS-MANVTLLE RESPECTFULLY REQUESTS THE FOLLOWNG ACTION BY THE FDA. FIRST, THE FDA IS REQUESTED TO INVITE QUALIFIED SCIENTIFIC PERSONNEL OF JOHNS-MANVILLE AND OTHER INDUSTRY LEADERS TO MEET WITH SCIENTISTS IN THE FDA TO ESTABLISH REASONABLE LIMITATIONS ON TREMOLITIC TALC AS AN INCIDENTAL FOOD ADDATIVE AND TO FORMULATE RESPONSIBLE TEST METHODS IN THAT REGARD. SECOND, THE FDA PARTICIPATE IN THE JOINT SYMPOSIUM OF THE NEIIIS AND EPA. THIRD, NO FINAL OR PROPOSED REGULATIONS ON THE USE OF TALC IN FOOD PROCESSING OR PACKING BE DISSEMINATED UNTIL THE RESULTS OF THOSE SYMPOSIUM DELIBERATIONS ARE KNOWN. FOURTH, IN THE EVENT ACTION DETRIMENTAL TO JOHNS-MANVILLE OR THE TALC INDUSTRY IS PROPOSED, OPPORTUNITY TO DISCUSS SUCH ACTION WITH THE FDA BE- AFFORDED JOHNS-MANVILLE PRIOR TO PUB LICATION. . . ' 5 -. - CRMC-HT-TALC-000093 I WOULD GREATLY APPRECIATE YOUR SYMPATHETIC CONSIDERATION OP THESE REQUESTS AND YOUR RECOGNITION OF THE GENUINE CONCERN JOHNS-MANVILLE HAS THAT RUMORED ACTIONS BY THE FDA # IF TRUE, WOULD, ON THE. BASIS OF HIGHLY SUSPECT DATA, UNNECESSARILY DESTROY AN INDUSTRY WITH A LONG HISTORY OF OPERATIONS FREE ' . , OF HEALTH HAZARDS. WE AGAIN PLEDGE FULL COOPERATION WITH THE FDA IN CONDUCTING WHATEVER STUDIES MAY PE REASONABLY REQUESTED TO ESTABLISH THE BIOLOGICAL EFFECTS OF TREMOLITE ON HUMANS WHEN INGESTED. I WOULD APPRECIATE HAVING A RESPONSE FROM YOU TO THIS TELEGRAM AND AM AT YOUR DISPOSAL IN THE EVENT FURTHER DISCUSSIONS WOULD BE HELPFUL IN REACHING A RESPONSIBLE CONCLUSION TO THIS MATTER SINCERELY YOURS, ' . ' ' . * . FREDRICK L. PUNDSACK, PH.D. SENIOR VICE PRESIDENT RESEARCH AND DEVELOPMENT, JOIRiS-MANVTLLE CORPORATION CRMC-HT-TALC-000094