Document zdNzEOr75NVdxxNzkr7x2r0b6

. ur.t . urvoy ;-t . .. ;yp: r:.. > o fi; r.t : .low .-rijr.tcr., wt.ui.es: lei: nd '.ncia by the ;:aranao -aboratory Juno 1-5, 1936 t'lAINTfFFT f - e`x''hniboint msg j$(f .. survey of ere uact sedition exist!r.c in the Uov. _ri bi son plant of the w c*o on h*no L ** 0 p iC w L *3 jT the ..c.rs::r.c laboratory una. tho results :.ro riven ir. this report, ire preduces of tho plant include lend plus ter (ground i^ypsun) j colcinca jypsuas r.lono, sio plaster of pcri3, or in snluturos such us car.cr.t "duster r.d ccjrdeu plaster; jypaua buildin.;; blocks; r.nd Cyp rus: rll boars, 'he plant cun prounco appreuiev.:tuly CC9 tens of stucco (calcined cypeur:) per uay, of which shout tv;o-thirds would be '--Iclued ir. lent rosutir.;; kilns ur.d ono-r.b.iru. in ovens or !,kot- :los;i. .ho blood plant has n tbilly capacity of 00 tens of blocks : nu rr.o ooord plunt cun esko 100,000 fet of corr.pooition well ooaru i.ny. .' Vie ..yw urij-.ton plant oxtenuu alone thu .ur.cr-i':*c::t for sno Lr.irs, of u :.:iie cr.a receives its raw n?:toriul3 (^ypaur. rock, si.nti) by boat, '-here ura tn-.o bir.ua of rnw rypsun rock : aurb and .rito. Vho dark rock la uisekurcod frore tho boat ir.to sr.oru^e al loc fro..'. ..rich it ir: ..lthdruwn ss n-jedvd nnd feu. to ; conveyor salt in tunr.ol unuornoutli tho alios, . ftor bainr; curried to u cinislior, .hero it ia rouucod to r.rsull si;:o, the roclc la puanoa through serronn, calcined in lone rotary kilns, ground flno in tubo rcillo nci -.r,.nc'Jo: *'.''-u o i: stucco bi:n; /or ntsrn^e. hr or. o bine i:.& : ;u:co c .' ; ::-'r :: t. t .*n c. y:.c.:. o . . c..ucc . to . `-Vr -.1 c.iont * T.'.o silos nro i.t the south onu of '/lie plant; near the north 2nd are large bins for the storage of white rock, farther on art the buhrstono ,_rinuers 'for th.e rock fine cr.d th.o ;les" In v.hich it is calcined. " rJho ''kettles1' and rotary kiln csl- cir.ers do 'not trocuoo exactly tv sane type of calcined yyprun, be- ir. o `'/irrks1 :h*,, hi....: is r. jr;;rater- fror.; th.e cktir^c ..hile in the calc inert "be prodv.cts of cor.ousticn and the: ch.r.r-e tre in- tir.Htol7 h-ilxoa. ' '- Vho <'Hrohouso occuoles the rnidulo portion of the plant on the vice nujr.cont to th.e water. Mere r.re located th.e machines for .tinin;; ana pacxinu ilaotor, -he stucco bins end the laooratory. buck of the warokouso floor space la used for storing bogs of pits- isr. Cn the street wide is the section, of the oir.r.t in ..-rich are .tiauo building clocks .-rid wf.il board. .-omissible -.tandards of lustiness It is generally conceded that the extent to which a haz ard fron silicosis or other form of pneur.oconiosis .night exist is indie:.toj 07 the concentration in the Industrial atmosphere of free silica or asbestos particles of respirable size. However, experi ence with r.ixud ousts, for instance silica ana iron oxide, shows that th.e response of the boay to inhaled silica la modified by the prosence of the.* iron oxide, .niunl experiments ..ith artificial .tjlx- turer, of quartz and culcineu gypsun rosultod in n u-.-lsyed hut typl-. cal ronetion to the quartz. pparently the protective action of the gypsum vjrc 0 nechnnlcul one, a clumping of qunrtz particles ino c . o .! ir-i 1 jj. t-u . * " , ** \r * ' ' r* *" W | , * ^ ' > w i L p * . I i id ' i 'J w O >--1 - . . 0 * V ' U> ^ ...^' .^4 .. ij w -- > wU *- - ' + ,. I. * ( | * J J l -;i" II;; :udcn.:.ry o .. t.i. - jf :.r. . ru u on . :\e _.our.`. of fre-i silica ir. the -ir-floatcd cu::' anu r-.`;;trd gypsum an- other non- siliceous conetituunts ns merely diluents. The evidence from the present end previous surveys in the gypsum industry strongly suggests that this as-sumption is not universally applicable* concentration of five million particles of free silica -v?r -ri. ft. o? nir has beer, *-.:* csively tugyesto-.. . lir.it stove .his:. cillcosid ru:n.rn mi. r.t -diii. -Ills vr.luli for uust : sr*. pl?t collected ""ith the .Ireer.burg- imith ir.ninger nppnrnzua and soun ite: by the standard light field techniqtio' of the U. d. Public iieBlth j-?rvi::t. fits light field method reveals particles ..' ich are larger th'-t t '-ir.imum cite es timer.* a to lie between C.7 yt. :..r.d 1.5 Jl* wince the Lmoin.ger apparatus collects and retains the majority of partic les much -nailer than that limit, down to 0.2 yt or smaller, a dark field cached by wtich zr.fi r-j art Her particles :-rs itr-.ue visible is also employed. Tito re ir- no -'encruliy-aecoptod standard for safe dust concentration determined by the d1 ark field method and it is tS5>; merely as n.n ujunct to oho light field techniquo and as a .guide in interpreting the general dust condition* Icon housekeeping stand crus demand shat the amount of even apparently harder non-siliccouc dusts bo kopt -within reasonable limits. vuluo of 130 million particles per cu.ft. of ir (11,^ht field count} ia ocmctlmos given as a maximum concentre - ion for any oust ~o vr.ich men ^ro continuously -.ixposod. leasts oncounterea In Plant 1'though thcro ia souo variation in the composition of ir-borne dust in the plant, the principal constituent is gonornlly ror cr psu . ;*a .rii, uu .0:' z .t f ...jv. . i * , * *u; . .uz - Z w *. w. o In :::j :lo bloc.: p- cnu fro boars olnus. ..Iso suspended In the ;.ir of the .i:\ouso urn particles of sand, .coq floor, jute fibor, lime,or ganic mntorisls employed ns a rotordcr, nnd occuslonnlly 3-. ell a- cunts of substances such us ;.sbest03 anil talc U3od in special piasters, buch of the dust sot up when anna ia 'unload.?ri from the host is undoubtedly quarts,sir* that mineral ia in excess In the sr.r.d, I.: tve operatic-;: of chip-ini* huhrstore .. dust '..rich is al- ..'.ost rum suartz is tenorsto;. ; .-v . duartz and oana <ov>ig to its quartz content) cr.n be clas sed as definitely hazardous. Asbestos also fr 11s in the corse cst- -Gory but to little it used that It can be neglected. Clinical end e*-: per ircntal evidence has leu to the conclusion that the in halation of cTP3Ua dust ia relatively harr.Heso; in fact, thor9 is tor^ b; sis for the belief that it 'ms a protective ;.etion by en gulfing pusrsr. prrticlos into clur.pa which settle out of tho breu- thin(. tone* '.ho other liir.de of dust r.sntioneii ure ru;;f.raeu es un- liholy to cause any type of pncunoccr.idsls. .' ' . -/ - . y ' '. Ihist Concentrations In Plant fust sonnies v/ero r.olloeto-; \.ich tho CroonburG-^nith in- pir.ycr :p-'rrv.tus unou in previous dust surveys for the V. ,,. Pypsun Cc . `.ho uust particles ere countoo by the light flclc :.othod of the Public health dorvice nu also with dark field illumination na reco/i'iendeu by some investigators# biunts for both r.cthods sre ta bulated at the end of this rwort# Most of the aanole: -to coll- * 'setod in 95 -per cent alcohol; for u few 25 per cent alcohol nsa substituted so thst only quartz and other insoluble ourticloo would -A- *.>W*^* ren;;in ur.ulsioived. `Jn 1 o a d ir. raw t url: i doth qypouci and sund l?o received by boat, i.'ust r.tcoloa for the ur-j.o^ciinr; of mypoun could not be. taken because no ah.ipraont of rock arrive v-vi-v** t'r.e survey. However, any duct raiseu would bi or inci te. .It .. -./.d should not bo rr.fv.l. band is unicauo- by ns r.s of :vr.. tor which lifts rl. n tho bent .-.no uiacharges it on a conveyor dolt in a snail room. the oust concentration inside the roomy. :s quite high, being 16C million particles per. cu. . ft. of air. wir.ee Ti'ir. oust l_s dorivou Iron rum: ..icl', contains a largo amount of quarto (by chemical an a.lysis ."0 per cent), It is dsnrerous. Therefore the r.r.n vor.rinr in oh is vicinity eWorld enr a reeoir'. tor when inside tho room; cn the out3ido he ic exposed to little dust do cause it is v\i E C i **: ^ by the winci. ** j? 11.?^ -v' ci c c lc irr Lt\it tt*v,* Vc -. * Vncer-.eath the rav: rock storage 'silos is a. tunnel in which is -- the conveyor belt that transports raw rock to the crushor. The dust concentration in tho tunnel \rr.s 10 million particles per cu. It. of air. ft :r being crushed the rock is lifted to tho top of ;6 building and then pcsse- down through screens. One men vor-cs around i' j?o screens a;:d the rvornye concentration to which he is exposed s to be 04 million particles per cu. -t. of :*lr. Vhe crushed roc : i- L'-on cal cined. There v;nu only n roderatc amount of dust around tho calclners, the counts doing 14 million for tho calcir.er feed can, 13 million for"'" the cr.Icir.or firemen und 19 million for the tube r.lll oner;.tor. d'oxt to the pkottles" tho dust concentration ..as ~G million J . "h - -. Af-kj . (jrov.ra _ this Mist ) which <as boinq lonuod into ocuurr?s n ^ m : . v i ` M r he ;*uhrr. tone .rir.de.rs, .< oro the rock to be ci.lcino:. in the "':ot- ' iu ground, the concentration of .dust uu;- lean ah' n 7 million particles per -u. ft. of air. Jhirolnp; buhrstones luhrstonss arc nearly turc quartz ana the chipping oi ther.'i crearos n dust that in definitely hur.crdous, The uuut count .'or tr..;-. ; p;:\s ; tr.r. -.tore "inn 17 .ililicn particles, a value h:c'.: it the fo limit. .n exhuuut r,~ztats of Curt removal res in- utuliea niter the dust samples had been taken t-na it io believed that the concentration has now beon rouv.oea to a aie vduj. block and bourn rlrr.t . t t'-o r.s. chine making gypsum blccka r.ko aunt concentration -fas fa million pr.rticlos. per cu. ft, of air. Tor the hoard plant the du3t counts .ere 9 r.iliion on the platform '..here thy upper pa per roils r.ro unwound anu terrs alba accelerator ndcrvi; ig nillicn 1 on the floor below -vhore the sosii-fluid gypsum is poured on the paper sheet; and. 7 million near the r.achino cutting rocklsthe boards lacs the _ust in these localities ir. principally rypsur., the fore going '.or.t antra tior.s cannot bo revere, oc ::o hetnrdous. in-t-r.r unu mckin/* olr.sr.cr * Tho nixing and pecking of r.liistor produce concentrations of dur.t that sre quite high, nn shor/n below# (dement plaster is nearly 99 per pont oslcinod gypsum und enndod planter ia about 78 per cent calcined gypsun and 71 per cont send#) : r. :: :*'e. bv i.r.r t t;c .'i ci-tIti * o -------! j 1 ?: 1 _i,-hc . Uid ;u .i:u: of Tics tor Mixing Plr.ster fncklnc " 1 r. o t r Corent Pl&ster 431.9 million 440.1 .million .`Tf.l million 50(3.1 clllion It i. -pr.r: `:i-t cn u n: u : t ry-toa of duo- ronovr. 1 r:-uut.-is - -- ^ ' * * ^i * * - * - - ^ ^ ^% * i , ' r ~ * r* -- v cnc *'- i!' ~'v''* f tr.3 rf: cv? hsuut r.cur :. rf `~.T r od .`02 /'re for : :k-sr -ith :.t- Ion; counts for -nr.plcs t-fiken st the Ofi.rficld plant . pccxcr uithout i;n cr.h'-uct system v.orn Sil. and 1C21 nil- -- - --' - ..-.ch :/ist is tut in uusce".clcn whon t-c>:in* 'utc- br.rc v.ith L-.nc r. rh--3 field count, -or thdt opera'-ion coin*; dfl nil- lion -re the cir ri-: field count kevinr tho o:< Crer.-i-ly hi, h vduo of ",1? Hiller.. '.1:0 pr cki.*v; ir.c is equipoou with oxh:nst vontils- tior. tut it is rrnor.bly rurr.cr I:;of factual because an opening in the brek, loft uncovered to r.lloc 'joints to be cliar.^od, int.-rforea with rff-.-ctivc ruction. This condition, should bo remedied enc the full value of the cxr.cuet cytor, rotlitod. , or. z.'.tr.r Z 'cur.d pr.ptr buns vith pi-, star of uric jo e:.- ;c-sc: o r c nnr or rut. tion of '.0 nil lion particles oar ou. ft. of -.ir. v i r. . urt !colci'"d ,-ypr.us.) or ell the land plaster (^rour.n yyp- :ur ) p.'.ciccd in ,,uto . ;;c is not. consiaerod to be danrercua. In a report of i. recent survey -.udo nt tho ruirflold plant on March ID - TO, 1056 ettuntion ciiroctew to tho dust condition na- Rocifcted v.lth tho r.ilr.inc end packing of onndori oloator. It wes ob served thnt tho hazard presented by thooo operations .7go loss oorlouo > * . ' O- . _-i*fA,.t- , ,1 1C,4'*. - 7- h * V . .w *.*, , , f :i `.hen tr.o tot;. I c.u.-^ ccncontreticn :.ione .ouiu 'h " r*or'c*! 1.1'i i tho ori i ~ i '.i "Tn I.- ' r* ' - ; ' _ ~ T ' ^ *%v r* u * onr.ition b:.c boo:* iV.'ru: ' 'Ll ct the .3 v _riw/hton plant. Ihie it .'c.voj'.Iod by eonperind creoles collect i:i 23 per -.e<nt alcohol r T-..I in -?5 per cent slcohol. in : foiT :r --osur: dissolves leaving r.Iy qunrtz nnd other insoluble pe ticloc, cut in 0." pir nenv. nicoh i the rypsurr. particles uo not dis solve. Jounts for those samples 'ro ns follows; I VO - - c =. *.**0^03 w >' 1M J C t v L cnr.t lc?v:oi st _ount hi::in,; ^r.c-ic Ms star h'.cbin ; .u-ssjJ flactsr 33 per cent .alcohol 25 nor cent ..ico'nol -tnplo hsrtplc ^v i 3 million ".?.3 millior. ISC-.l million :.? million The count for c.izin.3 tfinoon ol*.. star, 25 pci' ocr.s -ilcchol r.mr.ole, is higher thr.r. on: .ould expect ana nay fcs duo to the presence of .tuny or~cr.ic rr.rticlos, such no _ii.-l labors, <in tho air ii9or the mixer. i iei^ht i:: ijiven to this explur.tticn by the chec.iccl t-ntlyses below, which show n higher i^niticn loss for the raixor siusplo then for tho pecker sr:-pl3. In oruer to obo; in iccurnt: :r-.ov/ledr,a ef rho composition of r ir-bornc bust jenerated hen sanaal piaster vac boin<: r-ixed ...nd pcched, :t suction motor oauippeu v.-ith a dust coilacting cup \r.c operated ns described below. rixln.T jr.ncieu >!.,;;t?<r Hotor xul plueod on top of flculea, t breathing luvox, and operated for 40 ninuteB. ftt. of dust oollected s 1.157 r. -6 - Vi. Backing pi:-at or Lotor i.'cc cuspcr.r.ttd rt brc." thine loved, - ft. from nur. ut Bates packer, end oparuted for 20 nin# V.t# of dust col* looted r 0.1G0 gf. Chenicel Ennlyses of tho dust collected and i.lao of samiod plcntor reedy for shipment were thon mudo. Tho rocults are tetulrtod below. Chur.ical Analyses of Ocndod tor r.r.d hnncee Blascur j.ust Aciu aoiuclo XLUterlnl Aold insoluble material Ignition loss below 110 Ignition 108s above 110 3c ; cod --luster Ob. Gy* 62.5 1.5 2.0 10U.0 ..ir*L:m? Duct natr near mixer PECkor 7B.7> 5.0 73* 4/9 10.3 4.5 0.9 11.3 3.0 1 wd d liiO.'J Total insoluble 510^ 5G.8 liutlneted free SiC'2 (Quartsj 0 5.5 2 G.4 3 These analyses of sir-borne dust, show that only o smell fraction of tho quartz In tho uc.no.ad piaster mixture diffuses cr. appreciable dis tance Into tho surrounding air, either ct the mixer or at tho pecker# t ., This condition cay be due to the largo site of quarts particles or to the tendency of gypsum to forts aggregates with the quarts# In either osso the quarts rould not be air-floetod readily but would eottle out# hrox tiic above data it ic evident that tho t-lxing end pack ing of sanded pleatcr ure operations which cro not nearly so hnzerdoua as they would eppenr to bo* But neither can they be ctld to be ontlro ly without danger# Backing sendee plustor produced u cuct concontrc- tlon of 59G million particles per cu. ft# of airj and about 3 par cent of tbo dust vl8 quarts# If all particles wore tho sar.u else thoro would be nearly '18 million quarts particles in u cubic foot of clr. This would bo i* dangerous concentration# Undoubtedly tho particle of qur-rt:' i rr lrr. cr t/r.t.r. u'c ; ;'P!:-v t>.\C t *:miv I P* t! cuuccnirr - t-.o." - - ' * ** - lX . 1 v * ' ro - ' . . f j. .. ion i. yoiuL' is :* ..Cl -1' for -T .- r ~ Mf. > i eof.ol I1 * A. 1- /-> * ^ ' * *. T. *. Id-C*. J a C pi'. c.'.er cor.f i:\--.3 olds ccnc:ufio.*. Mr- ^ J" * r c- 4 * /* (.yncvi.o. rohr-'o: T'^ r p r t q *. 70T" "1 j ft: nur.ber of -ci. - '.'Iy scncv.nt f particles : ae; oily j ill-in led. Vh 13 ^ < i -v ^ ^ -loni v.'on 'nn packing sorueu piaster. C 1 r ^ ? iy ;: ;r 1.-:: ; ; c!.S .- orf j.r. .-.lilier. oc.r tides . w- ~ cu. ft. of dr - `'r* ,-. -- 1 ' 1 '*'*'** - - i.;i j w ^uw * u .* 0. * ' *' ?j 4 ir V* *<^>- o * ' ^ i ** 4 * e* '* 4 *> - fi?. . * o _ *. -" n r r.ins ivr. -.-r.-v.st in . . J . .'00 t- i :: :' r - t intervclo ;.;n r.ust ,o uis.luo the rfucco tins ond ._ ' / W *. Sm/ into holes in its floor. Jlcuds of oust nre raised' rr.rr.oio:'. t producir._ ten oxcuodir dy high concentretion of .don nor tides vs: :u. f:. of oir. ..] r.tnurr f,io --.urr. 13 : i ^jpstuo nnci t` . refer': reir-dvdy :.nrr.los ;, i- -v;1q : v? nr. oi. -tic to t/ork out. i !, of fen air." stucco .'dch vould. C> . not l-e.u.'.r. in to '-re rl: ln.ic' Vv:o count for ^ dust rr'.'~ tie the t.v i:-c floor of th.o ..Hrehouco ,;r. s represents in cvertigo oxposure of con trucking pluEtur. Considerable uust is raised when Motors uro blom out - 10 - - 'it/. '.e-tor . V. -- 4 lor ` 1 y. : re pro:.one .r.e -rum ..to cioyout r.otcrc or V.i:; continuiu:*. to do so, .iupeoinliy oir.co the oust -.07 I-*--*- ` ^ * .* iCl-V: . ;sr.C'jr.Ti-.:ior. tn tha t'.-ct me mop ,:r. s ..Leut 2 i'.iI. ten. ._ -'-turT.r" tnc. JaneInsions . . 1. lu ie : jco,-. or.esd Phut tit-.5 concentre: eloo of freo sll- iet , ;vr:r. ) duet to .: ieh nun .'rj ixtoiioi; do '.root lent tit nr* 5 : iilicr. o.'.rtielee nor ru. c;` ir. it is trton tint :. seri ous error"; I j ;v=ue to nest "roou h.ouseKaopintp'' requires: onto so .t V . - - r.n . ill It iitost-a .-ont inueusiy '-.o ..uet of '.r.y :ina in . ^-4 ^ ^ renter `.It: n iOd .ill ion, nertitl-ec rer cu. ft. of r-ir. .hose ruuss refer to 11, itt: fiala counts. 1 2. 11:t rum belpin3 unlord sene frou the bent should .?enr n rft.: sirs tor v'tton he Is insido the house ovor tho conveyor "belt. . Juhrctone cr.ipnin.* v.-imput on oxhrust oysters o?Tnrs to Its 1' :.;u..-..pus. It is bolinveu tr.: the auction c9Vicc recent ly inst-lleu ::cy cii.umr.t''' the hesoru. h. Ixinq . r.u pechin.' pi: sr.'jj* troytsen oust cor.cer.trctlono for cv : ' pcort housertocninj," Units. hen the pl.-.::t.rr it: ; ./tuna pi: ,,L.:: , :r'ou::t3 ol .-uorr.r. t.re Ueea .v L f-ui-iyolo ol" "he : ir- flo. t.:.. .1 u: t rho*/3 tlr t ll'rT.o ruerts in suspended in tho otrosphere. no.ovor, orrin,;; to tho 1 i.h c.ust concentration, even tho 11 4* O** ' \ -4 oi'.coiU o\'.-iiunc oyaton. L.r r'j:;Diriitc?rc If t'r.iz is Irror-r.ctlc.-^lu, f, ''J "'otos c':or r r. -.;hich innd 'olisr.^u:* lr rVoulti i.. ;,o , ;o ?xJ-r.u?r 1 j te:;'. incr'i'cetiv::. "O jo <-i r. .. ;:i core >.ul^ -iruo-jovc . . ey .. : -y :: ;.u -r. - . o . .y i r.ouj--. /.t .'OU.ii !.1 y ian ;:Vjcr.o 1_ so-. _. j rT.rcr.-.oiy h i:\2i Uu_; : :nc.-r.c:'c r.ion. 1'. nu_u -es/i t:oo- . . w : ::.;y ; ....y i;; .or;: yj.:;::yi-i Jr 3 Sin* L'>. -lo'-'i:: * ;.ur. .ro-.ors ,:rir;: .? cuzr, oov.a of dj u;*rso yt-rrioios* .. suooicn . or.`::oa of rov.:ovIns tho -- - *. r* * 'jj, o \l * 'C-' .1*li i; ''.w ir UViG-* /< .-'i / I '' ) AJ A a 12 r <1 4 n < t = * / , - -- --- ------ ------- ----- ------\ fartlolc: p^r cu.ft* of ?pU o. Oparttlm Rapraaentad Location .. * Kr '*4i Lata And Collot|iig Sampling Tim* fluid \ fimiitrha LlfM Hold i bo/a icy l'Y Dark f\}1 ( Tl*- nkto i) (Coml ma*r J 1 Oaloadlc^ *f nd ' "le t'Knn Inalda houaa aliirt Jtin 1# mt 91,f ilto Him la In*Id* >iou r .'iw t*f o.vl 11.0.7 froa boot ohuta rod b/ olovotor from boot t 33> p.ou hoi - whan outald* In !/*' llLtln *po- <llch*rtj<ii r.U on ounva/or 1 0 30 ` - ouro b*o*u*o duat la blown bolt ------P sin*. v 1 1 j(ai\ on boat t>oi >*poomi to nuoh dual* Good ventilation lnald* t.onaaj door \ 6 foot Away pon* . .V / a * * forking In tiui- Luc.pl* colitetod at breathing 0*1 urUor iIIob lc3l 30* lrtstd'j tannnl and nett to oonvayor bolt t JUna 4. 1036 p 10.oa p.ci. S 10.00 8 aln. -r ' '; (i ii llook ana balnr; tllaol.u:t." > rrom ahuta 30* o.30 fnrthor on In tuunaf. i:odereta tlrafl of air. P9.0 t,t.2 3 looking over ji'plo token at breathing lav" rook aare-na at 1 In olflflla of floor to rp- lop of iQ rcteut naorago looallonj near bvlUloi plooo ahaia can al-.oaola aruah* d rook Into olmta 4 Calalnar ftod Aiplo tV*n Mt bln at and of AAA OfilolDr) this roproaenta an Tcr* location for mao Juna 2, 1030 P lhSti p.B. > 11.30 5 aln. ' Juno 3, 10.'0 Y 11.10 p.n. 0 JJUOO ID min. y m .! i t 9 \ 1 .r Men la on tfila floor iroat of tin.| on 0.86 floor baloa near blna aoua of lli tlva. flood vonllIt.tlon. . i Oood ventilation U.V:0 JU9 14.2 71.6 1* > Cilitnor fir*- llaak hold at braathlng laaal t AAA on platfona In front of oal- t olnar gagaa. 9r Jun* P, 1WJ& f 10*20 p. .. io?o " J oln* . U.lolnor flranan hara Hourly all of tho tliao. > : flood ventilation. 0.C3 13.3 J1a7 *J / ,i. .I1 .., I , e .* i Cl H Partial*# par ou.ft.of tlr r (lit nl 11 Iona ) 3eple Oport Ion o. Iteprsernlod 0 Tube Dili op erator 7 lorn Ui; l r kettle* t bet* end peopling Celleetlng I'emorke % Vine fluid Cur pie collooted et bren thing l<inl,t ln. on tube atll floor end 4 nln, on oonre/or floor, o**r ero* oovered by tul-e olll open tor* inn* t, 103d f 10,53 PiDi, S JO. eg Din. 06JC Alco hol JO*"H tllln tullln . wrt9 In op*r tlun ,'uuJ v*ntl lotion : *.Hi nt-l.li. .1 i.. Light Held eboro balov lOy I0y Lr< fl*13 (plankton c ,idi *nr) 0.14 19.0 7! .6 llutk held >t bri'.tMnj; level. In fnrt of fumoooe June 2, ID.'C P 11.(SO p.n. B 11.<0 r 10 oln. i' t / epwt 9* i-7 > r;1i p ill:, etremi of 1* nd plentif fi i ... 1 .r Into M" . luoh duet 11 nJ l>y tl.le. llod nt lletlnn. 0.B7 ...3 4 .4 Ter.al.-j tuhr- lekon opfoett* erd a* itun grinder* tren the Diddle one In m of buhretono grinder* June B, 19.'d P 0.46 p.r. t 0.40 cln. b 9 tio CMpplng b-thr* FI. ak )iJd 1* front man chip* atonaa liuKrolor-aa Working t klock oeeMne :triple oolleoted et breethlng levol, 1* froa blook wtldM, between ua corking et *- ehlae. Juno n, 1010 p d.ro p.r . " 3.10 ~kJ Kin. dune 19)0 P 0.90 p.u. C g,10 TO min. * Uootl %<ir.t lltllor.j c;pin vlnJo* 10' 0.03 tj.U # * :.tron|f ur'.fta of air through opun iiOir Oe CH f* a*. #j aivl ojvnn alrviow 10' *4y. 1.*- Ivatiat froa -lr hannar bloa otilpa a*y from man. M n c! tpa buhralunv l/i of tit..** 1 out o r tl.'ifl tonrla tmSralwi i 1 ?>n* 17.0 Fnlr vuntlletlon o.os 94.C .V . 'J \i 1 #I i y n r OpMtt<in So. Hipmintiit l4>Oktlon V ** <r lata i.nj Inuipllng volitating l'lir# Fluid Kurwrlio t'frrtlolo* p^r c..ft*of l | In '-111 Ion* } LllJit t 1" Id bo vo beloii iop 10p v r. . lr la (.ln*loa n Corking in Sanplo takan on plat fora* hol Juno 2, 1934 board plmt at ding uppor pi.por roll*, at la- y 10.30 r>.f,, . papar rail* oitlar.a near papar roll and a io.ro . .. i. i>k to rorroannt an *T*r- TO &ln. d- Jtntdllioa. f M f Faadlnp *-1fluid |pw to board m oh in* r>*.nl oollmit-iu at bruatnlng 1"Y"1, l1 rroia operator, at placa ahora senl-fluld gjpaua la poured on paper-ahaot*. June lt )<OC y a>.a^(| p.Q* e t>..u> 13 oln. OB* tloohol' 1 ~ 'i Tni-r* alLii (ln.l ploatorj add-4 to the ailx In avail lota on this floor. flood vantnation 0.04 o.:- i > i i .i fintUtttlon; |;r. l?'""* V 0.13 19.7 u Cutting off Pookltho board* :.*pl* takao "* fioo oaohln* out tin* hook lath* board* in tao, 2* Iron atnu on ahioli board* ara atnoKod. Jon* 3, 1034 V 11.40 o.ir,. 3 11.30 1(1 a.ln. .1 4 i Hltio Y*ry Ill]f4 worVlnf In tMn tlclnlt;'* wnt ll*llor| open G* 0.04 6.S lo.i 14 i1 *liln eamant plaat-r (fl- ba rad | Flaak hald at breathing 1*4*1 4' froo hoppry at aoout ai India of area aoaarod b; nan. 7 i t It t IS Fixing aandtL piaatar -- ^-------- 3anpl* aollaatad at poaltlona acouptad bp oan rilling alt ar (naar happar and aealaa) aaupl* taaan In front of hoppar IT" t ' ' "*" ........................ U ` ^ Juno 1,1034 V 0.4U a.B. 9 0.40 8 t-ln. 1 1 I 1 1 >. JUDO 1, 1030 , J ' r 11.40 a.u. U 11.40 0 l.ln. June J9 lOwG f ^.46 pn. 0 340Z win. dun* 3, IVJf g 3.0b p.Ba jM9 . / tti ' ilaahal i * i* 1n. Two foiklni; ner e>l*or. Knlr Vd iUUt ton; opnn elmlow e*i`l d'JOf 30* 1.0.' 4M.fJ 77'\ 7 Covar on lioppar open r*t of lima, liter 1* baloa floor lav-il. little ventilation. Llr.tl* vent 1 latlon. ,hre /Id e*u#pt tht eollo~ ting fluid ii BfijC louhol 1.01 323.1 017. V l.li 3Ci- j 0.1 v: <- .th.M. fi i / K ............ 1. '........... >0. Fepreeented Looatlon . . 10 Faking eebant Flaak held at breathing level platter (fl* mldaoy beteeon two nan peoklng bered) oexent plnetor at Setae packer. i * (it ? faoklng tended Flaak held about 1* from head plaatar of men operating Hataa packer. ./ 1 ' ( i 1' Dfc* urn! Sampling Oollaotlng Tima Pluld | ' Beaiarke Pertlrler |.'l I.rt. <:T air ( In i 1 1 11' i.a ) Llp.ht Field ' "rk Kl ill a bo vo hMo )(p UT (ribnuton Condr*or) June 1, 103d f 0.08 a.m. 3 0.00 B min. ,f 06J< Aleohol Kaohine hee exhauet ayetem of duet re* novel. Teo men eeoh loadlnc 3 baga woik at piioker. Oooil voutllktloni open door 10*a>.ay. 1 1 e.33 440.1 lODr.O June 1, 1030 F 1.30 p.a. B 1.30 ----- G min. ( Haulline haa axhauat a} <tian of Cuat re 3. O'l L'JL.l PC04.7 moval. LI til i ventilation | open door 40* away. ?o June 1, 1036 F 7.00 p.m. 3 7.00 0 min. 21 Peeking land Carpi e eolleotnd at breathing Juno 3. 1036 plaater la Jute level 1 - C fron man at Batae t 1.00 p.m. bage paokar. 3 1.40 G min. JB_____ > i Packing plaater Cample taken between machine f parla Id t paoklng B lb. bapa with plaatar lb. baga of rerla and machine *lng than. June 6. 1036 F 1.6C p.m. 8 l.fO S min. 73 Seeing burlap Flaak held at breathing level June i, 1036 baga 3* frets girl aaalng baga. Otrl F 10.30 a.o. I1 eaey, ataeplng and airing 6 10.ro e.m. baga. eipoaed to laaa duet. TO min. i \\ ttf Aleohol .Saga t auBipla #10 axoopt that col** looting fluid wm PDjf laohol 0.1< b.v 74.4 96f Aleohol I I'.echlnv haa axhuunt eyatucuOpon duur al back Uor eonvenlenoa of operator In ohuiip.lni. bage) rumlara eyatom rather Ineffectual. Little ventilation. m Four (run work Kara, Oco<J ventilation* , U. 1 1 40..' in.7 9 ' V No Oi0t*u*t ayatwrt of dual >nrovi-le *T F*lr Timtllationi opan window 10* ivt; 1.31 F36.F r0< ,n __ _J  .ccpl< Operation 0 Itapraaanted t aorklng at Hag wheel. L legation laoplo tiiirin tr, pnesngewny 16* froc cloaoj room whoro Pag ahaal aaa ahull In; burlap aaeVa, bo to amt iinupllng Tlfio Collaatlng Fluid Juno r, i9::d V 4.SO p.n. 8 4.40 10 Bin. OSjC lloohol Pi.rtlcloe i-i- .or ulr tl.. 1UI -a) Hamarka LI gilt 1 lild I cn worlco part of time rilling bag ahool, part of tiro In p'auagnwvy ahen bag i.honl la running. Little ventilation) aoma olroulatlon of r.lr through open door. ohov.i icy 0... lo-. lark Field in-r Lien 0' T 1-V"T 8ft \ lar'ilng In atueco Klaak hold at braatlitng laval. bln. ft* lnalda atuooo bln. eloaa to aan aorbping atucoo lntft holaa In floor. . Julia 6. 1916 F 1.10 ft 1.15 l nln. Heavy alouda of thiat r lead ocotalonnlly by raillug atuooo lio vontllatlon. Vury h-<t. 0.07 l'.i71.'. 8ft Trucking on 3rd floor of wtrohouoa fumpla taken In pea gaeay ahara eleotrlo truoki "e*7 !ng aaokf are pouting. f7 dleelng dust out Plnuk held olooo to non blowing of retort *lth out notora (1' away for onaeoeprattad air. tt-ird of aanple, 3'a->ny for r* oalndor). Juna 4, 1036 F B.3B p.n. ft 6.30 nln. Juna 4, 10.18 V 2.JJ 3/4 P.b. 3 liA'i , . _ j 3/4 nln. i r ! china ahop. Saapla oolluotoa at br.milting laral In niuult of ma china ahop naar planet. June I, 1310 F 1.61 p.n. 9 1.40 oln. Uatna paoker 801 aaoy loading burlap bags. Oood vontllatlon. 0.11 U. Ona ana 11 and ono large notor blown out. ban itonra raapirn lor. 10.10 377. no. 6 3".3 Fair vontllatlon 0.C1 3.1 8ft la laboratory Sample taken lnalda laboratory t< from door ehloh aaa naarly oloaad. Juna 4, 189C F 4.6ft p.n. 4,r. ^0 nln. Oood ventilation) open window In op. poalta wall CO* aay. 0.07 ft. I ro.j