Document DaXZ41Vzr0eEERjMa2OLkyXd

\1^ . LABORATOIRE D'HYGIENE ET DeV,/ CONTROLE DES FIBRES MINRALES U 10, rue de la P6pintere, 75008 PARIS T6I. (1) 45 22 12 34 - Fax 42 94 98 86 Paris, September 17th 1990 Mrs Janis WOODSON CERTAINTEED CORPORATION 750 E. Swedesford Road Valley Forge05 PA, 19482 U.S.A. R Ref. : A.I.A. Fibre Counting Trial 1990 Dear Mrs WOODSON, I acknowledge receipt of the counting results of 3 counters from your laboratory. You will find enclosed a provisional report giving the individual positionsof these counters according to the 3 groups. The final report should be circulated at the end of the year, in which counting results of each participant will -be taken into account. Yours sincerely. Association rigie par la loi da 1901 CTD026253 A.I.A. FIBRE COUNTING TRIAL - 1990 PROVISIONAL POSITION DATA SHEET Name : Mr Scott HOWARD Company : CERTAINTEED Your countings and corresponding normalised results are reported below. Slide Ref. : D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Results F/mn* 126 745 375 142 339 93 120 228 277 673 78 290 379 250 127 Norm. Results 1.34 2.27 2.39 0.61 2.25 0.52 1.51 2.45 0.96 5.77 0.17 4.80 2.45 0.86 0.70 Normalised Mean : 1.94 Coefficient of Variation : 81.5 Your individual position is plotted on the following diagram: Group 1 Group 2 Group 3 Counters with normalised mean in the range 0,75 - 1,25 and coefficient of variation below 30 % Counters with normalised mean in the range 0,5 - 1,5 and coefficient of variation below 50 % Counters with normalised mean outside the range 0,5 - 1,5 or coefficient of variation above 50 % CTD026254 A.I.A. - FIBRE COUNTING TRIAL - 1990 PROVISIONAL POSITION DATA SHEET Name : Mrs Janis WOODSON REYNOLDS Company : CERTAINTEED Your countings and corresponding normalised results are reported below. Slide Ref. : D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Results F/nra1 60 448 162 359 113 185 32 78 412 133 866 91 201 388 243 Norm. Results 0.64 1.36 1.03 1.55 0.75 1.03 0.41 0.84 1.43 1.14 1.93 1.50 1.30 1.34 1.34 Normalised Mean : 1.17 Coefficient of Variation : 33.8 Your individual position is plotted on the following diagram: Group 1 Counters with normalised mean in the range 0,75 - 1,25 and coefficient of variation below 30 % Group 2 : Counters with normalised mean in the range 0,5 - 1,5 and coefficient of variation below 50 % Group 3 : Counters with normalised mean outside the range 0,5 - 1,5 or coefficient of variation above 50 % CTD026255 A.I.A. - FIBRE COUNTING TRIAL - 1990 PROVISIONAL POSITION DATA SHEET Name : Mrs Laura SHEMANSKI Company : CERTAINTEED Your countings and corresponding normalised results are reported below. Slide Ref. : D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Results F/mrn* 87 270 129 232 124 191 82 66 260 67 404 50 201 339 175 Norm. Results 0.93 0.82 0.82 1.00 0.82 1.06 1.04 0.71 0.90 0.57 0.90 0.82 1.30 1.17 0.97 Normalised Mean : 0.92 Coefficient of Variation : 19.5 Your individual position is plotted on the following diagram: NORMALISED MEAN Group 1 : Counters with normalised mean in the range 0,75 - 1,25 and coefficient of variation below 30 % Group 2 : Counters with normalised mean in the range 0,5 - 1,5 and coefficient of variation below 50 % Group 3 : Counters with normalised mean outside the range 0,5 - 1,5 or coefficient of variation above 50 % CTD026256