Our lead scientist for this effort is Dr.

Sinai, a leading expert on occupational disease, said, "We do not know a safe threshold level for a carcinogen like asbestos.'"

Langer found anthophyllite and tremolite in four samples These were also samples collected in 1973 MCCRONE ASSOCIATES reported to have done analytical work under Bristol contract for Avon Chesebrough Colgate- Palmolive Faberge Johnson & Johnson Windsor Minerals and Whittaker Clark & Daniels using principally RD and OM where appropriate TEM examinations also conducted Since 1973 no chrysotile or asbestiform amphibole was detected however no figures were provided on the analyses conducted STERLING DRUGS the manufacturer of ZBT Baby Powder reports third of all talc lots purchased have been tested by RD No mention is made as to how many samples of each lot were collected to obtain statistically meaningful data Furthermore it is difficult to determine whether sampling of third of the lots is adequate particularly if one does not know whether different sources of supply were used simultaneously Associate Director for Technology 3 WHITTAKER CLARK & supplier of talcs DANIELS WC perhaps of various origins and the most important quality grades to the cosmetic industry claims to have analyzed under contract 74 samples during the past four years Considering the nature of D's business volume the variety of sources of supply the various quality grades of talc involved and the fact that this firm also supplies other industries with industrial talcs which do contain asbestos I am greatly concerned about limited effort to control the quality of their cosmetic their talc Their sales catalogue lists at least 20 grades or types of cosmetic talc Accordingly any type of talc underwent one analysis for asbestos per year On the basis of this effort WC have provided their consumers with written assurance that they routinely monitor shipments of talc for asbestiform minerals and have found no detectable amounts This assurance might be mis- leading and give the cosmetic industry the false impression that WC talcs are adequately tested for asbestos I am also very much concerned about the fact that a firm of this standing in the cosmetic industry does not have facilities to do its own analytical work In summary though submission Talc Subcommittee looks impressive at first hand it does not offer much assurance that cosmetic talcs are adequately tested for asbestos If this is all that can be expected from the cosmetic industry in the form of analytical effort in the light of the asbestos in tale publicity since 1971 we have not much choice but to move ahead as speedily as possible with a proposal of a regulation on asbestos in talc using RD and DTA procedures and basing the levels of adulteration of talc with asbestos fibers on the levels of sensitivity provided by these methods Asesora Asesora Asesora Asesora Asesora Asesora Asesora Asesora ' Asesora Asesora AsesorAseasora Heinz J.

-- "of leading educators, that of the Panel on Alternate Approaches to Graduate Edu cation (C&EN, Dec, 24. 1973, page 35).

Industrial hygiene engineering has succeeded in devising procedures for safely processing and using many potentially hazardous materials, such as beryllium, uranium ore, silica sand, lead, mercury, etc.

Qulnby, H. 0, February 3. 1971 Page Three As to whether or not such uses could lead to the PCB'a getting Into the environment, I wonder If In late 1969 when we supplied the statement to "Envlronraont'1 you would have predicted the current situation as regards mercury. 4.

It was agreed that Mr Howard would persevere with the view that a sophisticated article could only be written by leading exports in day-to-day touch with world developments in asbestos and health, in this case Dr Smither and Dr Holmes. 680 Daily Telegraph Y.Tfl Dr Gaze reported that the Scientific Consultant to the Daily Telegraph, Dr Michaeiis, seemed interested in writing an- article on the future of asbestos.

This leads to their final conclusion ased on this upper bound, the use o f 'brakes was judged to be not significant as a source of atmospheric asbestos".

An organization meeting will be held for a review of the pertinent background leading to the formation of the Committee, the establishment of objectives and appointment of appropriate subcommittees.

One experiment, for example, established that a pcb with 62 percent chlorine was almost twice as effective as ddt in breaking down the sex hormone estradiol in birds; this is regarded as the initial step in the mechanism by which egg shells of pred atory birds (which have very high tissue concentrations of both chlorinated pesti cides and pcb's) are thinned, leading to high chick mortality and eventual ex tinction.

Niebling said it is known that breathing airborne vinyl The association said that the leukemia mortality was chloride can lead to cancer of the liver but its effects from somewhat greater for potroom workers, but this was found ingestion are not clear.

Lassiter expressed a guarded judgment that the mouse data reported by IBT would not lead OSHA to modify the emergency temporary standard, but that it might well cause OSHA to accelerate the rule-making process for the development of a permanent standard.

Lassiter expressed a guarded judgment that the mouse dal^a reported by IBT would not lead OSHA to modify the emergency temporary standard, but that it might well cause OSHA to accelerate the rule-making process for the development of a permanent .standard.

Carbide raised the sure 10 to 80 years in the past. 4), price hikes are being announced tab on its polyvinyl chloride resin All four BFG deaths, as well as with resin makers leading the way. suspensions by 5 cents bringing the CUSAROSS 02780

The Westlake facility was chosen on the basis of vinyl chloride manu facturing operation for which we wish to obtain data leading to the establishment of process raw waste load.