Document 82bZEMvb70j9x8jXrrwNmJMoK

ilI~1 Johns-Manville Intsrnt;ll ~OrreepDnQiBn ..,: o. L. Swallow ~ 1l. . VanBeadep " Dtte: I.ember 14, 1974 C4IpIe.: 8. Schettel lUe Iubitct: TALC USAGE - PARK FALLS, WISCONSIN " On Hovellber 7, 1974 tests were taken at the Flambeau Paper Compln), ot Park Falls, Wisconsin app17ing an open tace tl1ter membrane to Cletermine talc-tiber concentrations a. per ;your October 31, 1974 letter. A total ot 17 air samples were obtained at the following locations: 1. Blender No.1 .. Gen. Area Sample 2. Bl.nderl~o.l - Operator Sample 3. men<ier No.2 - Gen. Area. Sample 4. Blender No.2 - Operator Suple 5. Between No.l&2 Blenders - Gen. Area Sample 6. Vn1oading.RailRoadC&r - Worker Sample ? Unloading RallRoad Car - Gen Area Sample 8. SlurrylUlC PJ.;,t,torm - 0r.erator Sample 9.S1urJ7 Mix Plattorm - Gen. Area Sample (Samples #.3 ,10) (Samples #4,5) (Samples #2,12,15) , (Samples #13,16,17) (Sample #9) (Samples #7,8) (Samples #1,6) (Saraple 1111) (Sample 1114) OfSuples number 2, 3, 16 No.2 blender were obtained during the \18e ota.competitors talc while all 5ema.ining samples were obta:ined durinltbe use .ot Johns-Manville talc '. Tbe blenclers(botb No.1" 2) were completely enclosed except tor an.~pen~gapProx1tate17 16 inches square tor adding talc and clay. EVIl" 4SJD1n1ltes the talc and cIa,. (150 Ibs each) is nanually added tbe bags asided to the oJ:8rator '. right. The larEest he .~ atter the gs are on a 'ind are not el.liner a container or large J:&per bag. Talc in pro- portion to cIa,. emits le dust to the surrounding a il" when added to the blenders. Both blender. were in operation during the plant visit and the adjacent beaters were not in operation. No other processes ~volved the use ot talc in the immed:1a.te plant area during the sampling period. The talc unloading trom a railroad car was conducted exterior to the plant with a moderate breeze moving through the car. General Area samples obtained were downwind ot the workers at all time CAM-267 CRMC-Talc-Micro-001975 " "".10 bl.,,,erep.ilet1,ed(one pt.llet hilh) during the unloading .P'.9.~I"t"~i_B~,bIuIt.s.}Ij!loI:I:L\;eg~eiColrle\~~itf~t~a~Mo~rei..~h.itt toe_dnupallulslbsrot akcekotpheen lap pl-p. unlOll.d ver,lpllil8t1\o&dI. 011 the car _~{ .~k4tr ".~b~4'lwJ7p~!,~"o~ newto the operation and reported17 _~"'ll.t" a ..... ...l"&te,t.nt~>uaual17 . .chme tender. A. total J&lle~s).w~~ed\tlllJ.'8d1n .t.othe slurl7 during the ,~~~~~:~=~~:=. i p.:TLll'le~t(~)sPf~!rroa.utg.b1t011_sconps~onstitwiointhoonntlhyea two minute platform. ~.. uc.... we~easideCl t a t a e ' . where a pile ;"". 'L'IiIfjl:~'." P!ollet a slur17 is square top opening tor .. ... o_n~g1a .eqU:I.pPE~c1 with a lid which is closed "~I:..!I t.l'u!!! .tart'-Upvproc~ss. (1) U~~t.,cI$~.rra ~!JIl. .e 1 i , a ) ! i s t r o n V a por JOlbB&p '. (2) '.... CRMC-Talc-Micro-001976