Document L37rNMKznmYLMqV9wGpEMk67

ilc'.clwtc Qljihacti MEDICAL ENGINEERING LEGAL * * decision* and trends Cnhuslual Health TltuJi VCL1CIIS l - 2 IC:?----- 1933 INDUSTRIAL HYGIENE FOUNDATION 4400 rtrTK avlhuc PT7TSBURCM <w. f A. Hnvr.r EXHIBIT NO. .16 | WORLDWIDE COURT REPORTERS 1 i hfirmncas to Rccoot Literature - :l. U CnDfICAL DETT-TUIWATION Of QUA*?r- (FREE SILICA) IH JUSTS. E. Koplaa cod W.T. Teles. Iod. <1 Eng. Chea. Anal. Ed., !, 3^3 (July 3, 1930). The writers prvposc tho application of tho compound intorest law to dotormiao * th* rato of loss of slllee in the iCnopf (hyUi-oiiuoslllclc odd) and the Lina and * Arodino (fluoburle add) methods for tho determination or free silica. 8y apply, lac Knopf's factor of fl.lX lose per day and Lino aod Arsdlmo'e foe tor of 0.34* loss per day to tho matlicmaticai formula durived fnm the comiwund intoroat law, tho wrltora ealculeto the total freo silica loss for any mabor of doys. Tho eblof difficulty with this proccduro Is that tUo factor of rato of loss is not constant, but ratios widely wlth dlffcroat particle sites os lias boon demonstrat- d by Uoko and Harris. 13 OJHICAL COUSIDEIUTIOHJ OH THE QUESTION OF INDUSTRIAL CANCER OF ASDEJT03 WRXEtS. T. Horde* Ztsehr. r. Krebsforseh., 47, 201-7 (1930). (Cemaa). A 30 yoxr old toman a ho workoi in an asbdstoa foctory From 1919 to 1930 fell 111 of asbcotosls. In 1937 o sharply defined s hasou wos scon roontgonotrophlcelly la the uppor loft lobe. This shadow cos coed dared by tho author to bo a ear* cinoma and in the decision on tlw enso, o causal rolatlon between tho presence of acbostosis ofui tho davoiopmeut of carcinoma uu accepted. Tito correct diag nosis of carcinoma was eonflraod on autopsy. a< TIE INDUSTRIAL CAlJCSt or LDBCT3 IN ATBESms. J. Nnrdannn. Etjehr. Krebsforch. 'I:Jai : 47, 200-302 (1930). Tbe author describes 6 easoa of osbostosls with lung carcinoma, of thleU 3 wero squamous carcinoma with hornificatlon and tho other an adoooccrclnana. Uost of tho cosos eoro younger than tho averago esse of lung ccnccr. The exposure to asbestos had lasted 7 to 21 years, end had begun 13 to CO years before observa tion of tho carcinoma, uttn the ozeeptioa of rn elderly woman wlo had only cn -r erpojuro of 19 months, 17 yeors before b*or7stloa, and aho had a high dogreo 4 of asbestosis. cliot property of asbestos la rce;**cu.lblo for ties cancor develop ing on tho groundwork of jsbcstosls is not yet hno'^i, but there may be in s*hca- toj so-c :li..d *-j re iVia genic substances. * 15 TESTS CF A HUttlER UUW HOCK FUaT III HACJ. H.P. Crcer.wcld asd H.C. ; Honorth. U.L. Dur. Ulno., Rept. Investigations Ho. 3411, lh pp., (August, 1933). Obtainable free fron Dir. of Information, U.J. Durc/iu of iiinea, Uashinrtton, D.C. f. A recently dcr.jlnpeil method of explosloo barrier 1- tested by tlic Durucu. Tho 1 method con.lets In Justing tith llmor.tono placed In j*.per bogs ;?hlch nrt mountod on posts la truckle.s entries. I'he bags uro mounted la such u wuy us to be automutlcall> opened by the stock rsvos lo ndT.tncc of en czpiosloo end complete description 1. given of the twctolquu used. The too tests au#dc wero successful in ovory case cut one. Thay are described as cheaper than tltoso methods recom mended in their bulletin No.323 but or not recaonoodod for entries provided with track. The llaestono used is especially treated to increase resistance to moisture. ; 14 02 occur/ATIOtL; Wl uo/X-u:ifc y*dU /-'O COa:-J-JHZ VU/llLAVIOil. I). Unrrlrv;toa j and E.H. CXjnny, W.w. Bur. Mines inf. wire. !U>.7332, 20 |>. (Au^;uat, 1933). Obtainable free free Div. or Information, U.l. Ouroau of Lines, 'DaahSngton.D.C, S- Tantlloeion is noe or most iaportant single operations In mining for pro- 1 tocticg lives emd In promoting efficiency of operation. During 1932 and 1933 ^ iocluslvo, tlu explosion record in c<*al-minos ras very good but during 1937 and 4 1930 cxporicnco tn.< boon baa, sad It Is suggested that tha causo may bo due largely to tho overlooking of the ventilation ra.{ulrwawata. Tills bulletin pro- 2 scots a siiwwir/ or Important srnsldsratlons in ventilation Including m rorlcv 17-1 ata security & storage