HWBB-0018917 Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL TOXICOLOGICAL LEGAL OCTOBER, 1961 (Vol. 25, No. 10) C=3 INDUSTRIAL HYGIENE FOUNDATION MELLON INSTITUTE 4400 FIFTH AVENUE PITTSBURGH 13.

TO: Safety Directors P5>M FROM: DATE: Interoffice Communication gjjgj.

HWBB-0018917 Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL TOXICOLOGICAL LEGAL OCTOBER, 1961 (Vol. 25, No. 10) C=3 INDUSTRIAL HYGIENE FOUNDATION MELLON INSTITUTE 4400 FIFTH AVENUE PITTSBURGH 13.

FRIDAY, OCTOBER 4, 1974 WASHINGTON, D.C.

ANALYZER CARRIER GAS BANK SYSTEM The carrier gas bank system will automatically switch the carrier gas banks to the analyzers.

SYMPOSIUM ON CERTAIN CHLORINATED HYDROCARBONS Harvard School or Public Health, Boston, Mass.

APPENDICES ; ATTENDIX APPENDIX Biographical sketches ~------~-- ----------- List of persons who attended conference 164 as sandstone is also a harmless dosage may be good arithmetical reasoning but may lead one into a serious error My suggestion is that we should determine the permissible limit of dustiness for each individual dust In the interim for those dusts that we do not have any basic data of threshold dosage we can demand from industry that it maintain conditions in the workrooms equal to those already found in the best plants of a similar industry in actual operation I shall now be happy to answer any questions that may have suggested themselves to you during the course of my remarks DR SCHLOMOVITZ Did you make any study of the dust , in the air passing through respirators MR BLOOMFIELD We have conducted studies on positive pressure masks and helmets as used by sandblasters during actual work in a sandblast room but we have not conducted studies in the field nor in the laboratory on the efficiency of respirators Excellent work on respirators has been done by the United States Bureau of Mines and at Professor Philip Drinker's laboratory at the Harvard School of Public Health - DR SCHLOMOVITZ You don't happen to know the size of particles that pass through the mask MR BLOOMFIELD Last month Professor Drinker pre- sented a paper at the National Safety Congress in Washington in which he stated that a careful measurement of the size of dust particles entering and leaving respirators shows a slight but important reduction in average size of the dust particles In fact there are now respirators on the market which on testing by Professor Drinker were found to have efficiencies in excess of 90 per cent against silica dust of a size less than 2 microns So that apparently some respirators do filter out the small particles MR WILCOX Is there any recognized activity among these manufacturers of protective devices respirators and so forth to try to develop something that will give relief MR BLOOMFIELD Very much so The manufacturers of equipment and protective devices are quite active In _ sagemay be good arithone into a serious error i mine the permissible dua dust that we do not have any ve can demand from in- 3 in the workrooms equal st plants of a similar in- r any questions that may u during the course of ake any study of the dust ators nducted studies on pasias used by sandblasters it room but we have not in the laboratory on the ent work on respirators tes Bureau of Mines and oratory at the Harvard happen to know the size mask?

FILE NAME Industrial Hygiene Foundation IHF DATE 1961 Oct DOC IHF201 DOCUMENT DESCRIPTION IH Digest listing attendees of IHF training course covering pneumoconioses & other topics with Literature Abstracts 01897 1992 1992 1992 1992 1992 1992 1992 1992 1992 November Hygiene Digest NovemberNovember November Industrial November November November November INDUSTRIAL HEALTH NEWS November November November November LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL ABRAMS TOXICOLOGICAL LEGAL ABRAMS ABRAMS : RREREE RE RE RE OCTOBER 1961 Vol 25 No. 10 INDUSTRIAL HYGIENE FOUNDATION MELLON INSTITUTE 4400 FIFTH AVENUE -- PITTSBURGH PA PLAINTIFF'S EXHIBIT TH- F202 03120921 0189 C66I C66I C66I CC66I6I C66I C66I .

TOXIC SUBSTANCES CONTROL ACT (TSCA) PL 94-469 CANDIDATE LIST OF CHEMICAL SUBSTANCES ADDENDUM III CHEMICAL SUBSTANCES OF UNKNOWN OR VARIABLE COMPOSITION, COMPLEX REACTION PRODUCTS AND BIOLOGICAL MATERIALS MARCH 1978 KMX 00233 U.S.

tdopled by the DEPARTMENT OF DEFENSE lee acceptance police on inside (rant cover practices for respiratory protection ANSI 288.2-1900 SC-3M-4345 ` ACCEPTANCE NOTICE ANSI Z88.2-1980 11 March 1981 This non-Covernment document was adopted on the 11 March 1981 and is approved for use by the DOO.

I ANSI Z88.2-1978 AMERICAN NATIONAL STANDARD PRACTICES FOR RESPIRATORY PROTECTION CONOCO CHEMICALS RECEIVED OEC 8 7a I A RECEIVED DEC 11 w/a DRAFT SEPTEMBER 1977 VAB.0001034313 4 # f AMERICAN NATIONAL STANDARD PRACTICES FOR RESPIRATORY PROTECTION ft Introduction Tins standard sets forth accepted practices for respirator users

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--L ist of persons who attended conference. 213 164 as sandstone is also a harmless dosage, may be good arith metical reasoning but may lead one into a serious error.

( HPBB-H018917 J Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL TOXICOLOGICAL legal OCTOBER, 1961 (Vol. 25, No. 10) hr INDUSTRIAL HYGIENE FOUNDATION MELLON INSTITUTE 4400 FIFTH AVENUE PITTSBURGH 13, PA. 03120921 It r 03120922 Industrial Hygiene Foundation assumes no responsibility lor statements In articles abstracted In this Digest or for material from other organisations which may be sent to members from time to time.

( HPBB-H018917 J Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL TOXICOLOGICAL legal OCTOBER, 1961 (Vol. 25, No. 10) hr INDUSTRIAL HYGIENE FOUNDATION MELLON INSTITUTE 4400 FIFTH AVENUE PITTSBURGH 13, PA. 03120921 It r 03120922 Industrial Hygiene Foundation assumes no responsibility lor statements In articles abstracted In this Digest or for material from other organisations which may be sent to members from time to time.