Document 9JbE8DGNbMoVm04qqY1zQ1BrR

LABORATOIRE D'HYGIENE ET DE CONTROLS DES FIBRES MINERALES 10, rue de la Pdplnldre, 75008 PARIS ,j. K \; Tdl. : (1) 45 22 12 34 - Tdlex : 281 133 4 /A, i1 PARIS, March 24th, 1989 RECEIVED MAR 3 f Mrs. Janis WOODSON CERTAINTEED CORPORATION 750 East Swedesford Road Valley Forge Pennsylvania, 19482 U.S.A. Ref. : ASBESTOS COUNTING TRIAL 1988 Dear Mrs. Janis WOODSON You will find enclosed a provisional report of the 1988 circulation, in which one or several counters of your company have participated. This provisional report indicates roughly the posi tion of your counters compared to the others, and their tendancy to over or underestimate the number of fibres on a sample. The final report will be sent to you as soon as all counting results will be available. Best Regards, Enel. 2 A. Baujon, Director. CTD026290 LABORATOIRE D'HYGIENE ET DE CDNTROLE DES FIBRES MIISieRALES 10, rue de la P6plnl6re, 75008 PARIS T6I. : (1) 45 22 12 34 - T6lex : 281 133 ASBESTOS COUNTING TRIAL, I9S S Provisional Report This report has been established on the basis of the counting results available at this time and some slight changes in the classification of the counters may occur at the end of the circulation. As in the 1987 slide exchange, counters have been classified into three groups : - Group 1 : Counters with a coefficient of variation111 less than 30 % and a normalised mean*2> between 0.50 and 1.25 - Group 2 : Counters with a coefficient of variation less than 50 % and a normalised mean between 0.50 and 1.50 - Group 3 : Counters with a coefficient of variation greater than 50 % or a normalised mean outside of the range 0.50 and 1.50 The position of each counter is shown on the diagram, and the "red point" indicates the individual result of the counter. A final version of this report will be forwarded as ffoon as all registered counters have retourned their results. It is reminded that all the data and results are strictly anonymous. (1) Coefficient of variation (intra-lab index) = the standard deviation (of a counter's normalised results) divided by the normalised mean. It is an index of the dispersion of the counter's results. (2) Normalised mean (inter-lab index) = average of the coun ter's normalised results. It is an indication of over estimation or underestimation. Association rigle par la loi de 1901 CTD026291 ASBESTOS COUNTING TRIAL 1988 DISTRIBUTION NORM.MEAN/COEF.VAR. COEFFICIENT OF VARIATION I I COMPANY : CERTAINTEED CORP. I' I NAME OF THE COUNTER : J. WOODSON I I I COEFFICIENT OF VARIATION : 46.5 I I NORMALISED MEAN : 1.41 I _I I I I I I I I I I LABORATOIRE D'HYGIENE ET DE CONTROLE DES FIBRES MINERALES 10. rue de la P6plnl6re. 75008 PARIS T4I. : (1) 45 22 12 34 - T<lex : 281 133 GTJIDAFCE NOTE FOR THE ASBESTOS COURTIHG TRIAL OF THE A. I. A. - A set of 12 slides has been sent to your laboratory. - Each counter previously registered should perform a unique count per slide and report the numbers of fibres and fields. - It is essential that those slides should not be treated as special samples but should be counted under the complete routine procedure of your laboratory. \ ' - Results of your counts should be sent back direct to the L.H.C.F. by telex <281133 F) under the following format : Country : USA Company : CertainTeed Corporation Fame of the counter : Janis Woodson Magnification of the microscope : Graticule <type and ares, in mn1) : Counting method : NIOSH 7400 A Rules 400X Walton/Beckett .00785 mm Reference I Humber slide I of fibres i IB I 104.5 2B I 114.5 3B I 123 4B I 100.5 5B I 4 6B I 100.5 7B I 131 8B I 146 9B I 113 10B I 57 11B I 102 12B I 46 I Humber I of fields 1 I 39 I 103 I 40 I 72 I 100 I 40 I 64 I 20 I 92 I 100 I 87 I 100 I Comment I I I I j heavy particulate 1 count could be I higher I I I I I I - After counting, your laboratory should circulate the slides according to the procedure set up by the organiser in your country - It is imperative that a set of slides should not stay longer than one week in each laboratory. LABORATOIRE D'HYGIENE ET DE CQNTROLE DES FIBRES MINeRALES 10, rue de la P6plnl6re, 75008 PARIS T6I. : (1) 45 22 12 34 - T6lex : 281 133 LIST OF LABORATORIES HAVING RETURNED A REGISTRATION FORM j 1 Certainteed Corporation. 750 East Swedesford Road Valley Forge Pennsylvania, 19462 Correspondant Monsey Product Company Cold Stream Road Kimberton P. A, 19442 4 Correspondant : William G; Sshomp i - Nuturn Corporation 1, Grizzly Lane Smithyille i TN, 37116 I Correspondant : Judy Kimbrell *\ K s- CTD026294 LABORATOIRE D'HVGIENE ET DE s CONTROLE DES FIBRES MINeRALES I 10, rue de la P6plnl6re. 75008 PARIS T6I. : (1} 45 22 12 34 - T4lex : 281 133 Paris, October 25th, 1988 Hr. Bob J. PIGG Asbestos Information Association North America 1745, Jefferson Davis Highway Christal Square, 4 - Suite 509 ARLINGTON, Virginia 22202 U.S.A. Ref. : A. I.A. Asbestos Counting Trial -- 1988 Dear Mr Pigg, Please find enclosed a new set of 12 microscope slides together with a guidance note. May we ask you to circulate this set of slides among the 3 laboratories according to a procedure of your choice. On termination, would you please ask the last parti cipant to send back the slides direct to L.H.C.F. In order to have the shortest delays between transfer of slides, we strongly recommend to dispatch them from one laboratory to another by "courrier". There should be no more than 14 days between two consecutive laboratories, n Many thanks for your kind cooperation. A, Baujon Director. Enel. : 1 guidance note 1 set of slides 1 annex (list of participants) iT A- vt -C> -- ^ r * sr\r- 7 CTD026295 [NORTH AMERICA ASBESTOS INFORMATION ASSOCIATION 1745 Jefferson Davis Highway, Crystal Square 4, Suite 509 Arlington, Virginia 22202 (703) 979-1150 November 9, 1988 Memorandum For: Jam's L. Woodson CertainTeed Corp. 750 E. Swedesford Road Valley Forge, PA 19482 Subject: AIA Asbestos Counting Trial In response to earlier correspondence, your company along with two others identified below expressed an interest in participating in the Asbestos International Association's Asbestos Counting Trial. Your attention is particularly invited to the details for completing this participation as set forth in the LHCF letter of October 25, 1988 (copy enclosed for all participants). It is requested that, subsequently to counting of the enclosed slides and submission of your telex results to LHCF in Paris, that you forward by Federal Express or similar courier means the slides to Monsey Products in Kimberton, PA. Monsey then to forward to Nuturn (Smithville). Nuturn (Smithvilie) is requested to return the slides to LHCF and advise this Association when such has been done. Companies participating in this asbestos counting trial are: 1 - CertainTeed Corporation 750 E. Swedesford Road Valley Forge, PA 19482 (Jam's L. Woodson) 2 - Monsey Products Company Cold Stream Road Kimberton, PA 19442 (W. G. Schomp) CTD026296 Page 2 (Memorandum to Jam's L. Woodson) 3 - Nuturn Corporation - Automotive Division 1 Grizzly Lane Smithville, TN 37166 (Judy Kimbrell) Please know in advance that your assistance by participating in this important project is greatly appreciated. President Enclosure cc: Richard Alexander - Monsey Rita Grisham, Nuturn Judy Kimbrell, Nuturn W. G. Schomp, Monsey Alain Baujon, LHCF Sir Neville Stack, AIA (less end) II II (with end) It It (less end) II II CTD026297 `f&______ ___________________ijJl ... .. 7A ..... /V& 3-/* <____ W__ __ Lb <S>ollth*) <5b tyicro /oo.T >&g'/7~z-V l6Q.<~ bb yfc Ho IZi dd*i hoi / mA' ASBESTOS INFORMATION ASSOCIATION 1745 Jefferson Davis Highway, Crystal Square 4, Suite 509 Arlington, Virginia 22202 (703) 979-1150 May 20, 1988 Memorandum For: Janis L. Woodson, CertainTeed Corp. W. G. Schomps, Monsey Products Co. Judy Kimbrell, Nuturn Corp., Smithville, TN Judy Ingram, Nuturn Corp., New Castle, IN G. H. Andersen, Allied-Signal, Inc. Subject: Asbestos Counting Trial (A.C.T.) 1988 T.he enclosed memorandum from the Asbestos International Association dated May 10, 1988, same subject as above, is self-explanatory and is invited to your attention. Your participation in the it is hoped that you will the attached registration as possible. ACT last year was most appreciated, and participate in 1988. Please complete form and return it to L.H.C.F. as soon Thank you in advance for your attention to this important matter. President Enclosure cc: Richard Alexander, Monsey Rita Grisham, Nuturn Owen Kittilstad, CertainTeed Terry Stewart, Allied-Signal Frank Wardley, Quin-T CTD026299 ASBESTOS INTERNATIONAL ASSOCIATION (Limited by Guarantee) 6S GLOUCESTER PLACE, LONDON W1H 3HL, ENGLAND MEMORANDUM To: MEMBER ASSOCIATIONS From: DIRECTOR GENERAL Subject: ASBESTOS COUNTING TRIAL (A.C.T. ) 1988 In reply please quote: AIA/20/2/13/HAS Your Ref: Date: 10 May 1988 You have probably received a copy of the L.H.C.F. Report on tine 1987 A.C.T. (dated March 1988). This slide exchange appears to have made a very useful contribution to all the laboratories involved in fibre counting. Consequently, the AIA Dust Advisory Panel have recommended, and the Executive Committee have agreed to, a second slide exchange in 1988. The L.H.C.F. will again ensure the running of the A.C.T. and prepare the final Report. The Executive Committee felt that for 1988 those laboratories which ' could afford to do so should be asked to make a contribution towards the costs of the A.C.T. Such laboratories will be contacted separately and in due course. In order to avoid delays, it is strongly reconrrended that the L.H.C.F. procedure is followed. This will be sent to all participants returning the enclosed Registration Form. Would you please contact all the interested laboratories in your country (including those which participated in 1987) encouraging them to take part in this A.C.T. and asking them to return their Registration Form as soon as possible to the L.H.C.F. The analysis of the results will, of course, remain anonymous but each participant will personally receive a report pointing out his position among the other participants. Following from experience in the last (1987) A.C.T., a provisional position data sheet will be sent out to each participant shortly before the final Report. As we anticipate extensive participation, we once again urge you please to ask participants to reply promptly. DIRECTOR GENERAL CTD026300 rtJOtaiUa V.UUIN 1 i.<a ItUAL Please return to L. H. C. F. 10, rue de la Pdpini&re 75008 PARIS - FRANCE REGISTRATION FORM One form for each laboratory 1 . NAME AND COMPLETE ADDRESS OF THE COMPANY OR LABORATORY : CertainTeed Corporation___________________________________________________ 750 E. Swedesford Road Valley Forqe, Pennsylvania, 19482 Telephone : (215) 341-7713 Telex : (215) 341-7797 .2 NAME OF THE CORRESPONDANT IN THE COMPANY OR LABORATORY : Jam's L. Woodson 3. - NUMBER OF COUNTERS TAKING PART IN THE A.C.T. NAMES : Jam's L. Woodson 4 . TYPICAL TOTAL NUMBER OF SAMPLES ANALYSED OVER THE YEAR BY THE LAB. 500 5. - TYPICAL VALUES OF THE FIBRE DENSITY ON THE SAMPLES USUALLY ANALYSED BY THE LAB. (in fibers/mm2) : CTM*) 100-200 200-300 300-400 400-500 500-600 >600 6. - ORIGIN OF THE DUST SAMPLES ANALYSED : MinesMills / Asbestos j Cement/ Friction Materials Textiles Others : (specify) (1) (1) (1) Please circle the corresponding case(s) CTD026301