Document O1gmVqvX4rkMyQG4VgeJvnqBK

FILE NAME Quebec Asbestos Mining Association QAMA DATE 1935 June 3 DOC QAMA100 DOCUMENT DESCRIPTION Internal Report by D. Wolochow RE Investigation of Asbestos . 4 7 s 3 . AUTHOR D. WOLOCHOW INVESTIGATION ASBESTOS PROGRESS KERVNI DIVISION CHEMISTRY CHEMISTRY PERIOD COVERED Kay 19 ewan ee abs 6m ne OEE es CONT ED + FACC a T h SED DATEJune 1936 Date Typed 23 June 193 TOPICS . 2 3 Utilization of Short Fibre Asbestos Fibre for Filtration Standard Testing Procedure Purposes 5 Tests on Asphalt Floor Tile 6 Visitors to the Laboratory 1. Utilization of Short Fibre a It has been found that if the light material is separated from short fibre 7 R and is then mixed with portland cement the product obtained is considerably lighter in weight then when the whole fibre is used Thus with equal weights of this light fraction and portland cement the product weighs about 40 cu.ft and has considerable strength Because of the low density this product should also have low thermal conductivity purposes prepared Using fibre such as has been a product of very low density was for filtration obtained - 17 cu.ft and the colour is light cream b report figures The pressure molded specimens mentioned in the previous No. C47-38 p.2 par.f have been broken and the following are representative of the results obtained Fibre No. 646 - 1 part Portland Cement 1 part Tensile Strength No water added 1125 lbs in 7.5 water edded 15 water added 1225 9 " " 1340 Comp Strength Density 15,375 lbs 90. in 19,875 1887 BQ in 19,000 lbs 60. in 227 gus or 142 lbs cu.ft 2.40 gms OI 150cu.ft 2.27 gms ccc 142 cu.ft The specimens pleasing appearance and purposes which were molded with water had a very should be suitable for decorative building COPY FOR THE PRESIDENT J. M. PLAINTIFF'S EXHIBIT Bayone 962 2 Asbestos Fibre for Filtration Purposes a Tests have been made on opening of fibre with rode in place of pebbles in small pebble mill also with hard rubber balls in place of the pebbles It was found that the rods did not cut the fibre as much as pebbles do but on the other hand the opening efficiencways somewhat lower study is warranted Further The fibre at all with a rubber hard rubber balls did not of course damage the but the efficiency was very low A metal ball covering would perhaps give interesting results The possibility of using the J. M. opener for opening fibre for filtration purposes has been investigated but the results indicated that this type of machine would not be satisfactory Seven passes through the opener left the fibre with a large number of pencils and did not redeqse the magnetit to nearly the same degres as the pebble mill does was for b At the request of Mr. W. A. Newall a conference attendeadt Toronto regarding the proposed arrangements the production of filtration asbestos on a commerdta scale After a lengthy discussion of the various terms of the agreement it was suggested to Mr. Hewall that he write a letter to the Council listing items on which he wished to obtain more official information items he wished amended deleted or added 3 Standing Testing Procedure procedure Work on the development of a standard testing procedure for the q S. test has been continued In report No. C 67-383 prepared by A. van Winsen a tentative procedure consisting of cake opener - press - cake opener is suggested but tests which have been made indicate that the problem has not been entirely solved as variations in test were still obtained 4 Q. A. P. A. Meeting The regular meeting of the Association held on 23 May 1938 at Sherbrooke was attended Report No. C61-388 ( see above ) was presented and discussed It was decided that the Canadian Mansville Company would build a cake opener such as was designed here and would put it at the disposal of the Technical Committes sae ~ one ae Re Oe eam nee eae ne The chairman of the Fibre Inspection Committee brought up the the Council's request for a certified statement regarding the performance of the metal machine After much discussion he was authorized to issue such a certificate Dr. Stephenson ( C.J.M.medical C.J.M.medical officer was present and a round table discussion of asbestosis took place The application of the proposed provincial legislation on this hazard was discussed by Mr. Robertson safety service agent For the association 59 & summary of the complete discussion is to be circulated with the minutes of the meeting it will not be dealt with here 5 Tests on Asphalt Floor Tile - See report No. C 57-38S dated 12 May 1938 60 Visitors to the Laboratory Professor J. W. Bell of McGill University spent half a day in the laboratory inspecting the equipment and discussing the work which is being done . fica JJA