Document BryQzyanawMnEMvQaVNwODX

PLAINTIFF'S tXHIBIT MON-2406 -jjesn. -$** ', SbtUc ppm' Mf/M Zinc onde fume............................. Zirconium compounds (as Zr).... -- -- 5 5 R*do*ctlvtfT: For ptrmiisibl* concentrations or rpdio-isotopts in a<r. im U. S. Oepertment of Commerca. National Bureau of Standards, Handbook 69. "Maximum Permissible Body Burdens and Maximum Permissible Concentrations of Uadi* onuciides in Air and In Water tor Occupational Exposure/* June S, 1959. Also, see U. S. Department of Commerce. National Bureau of Standards, Handbook 59. "Permissible Dose from External Sources of Ionizing Rxdfxtion," Septembtr 24. 19S4, and addendum of April 15, 1954. Note: The word "Skin" following a substance indicates Mat the substance can penetrate trie skin- to contribute to the exposure and threshold limit value should be re duced accordingly. * Parts of veoor or gas per million parts of air by volume at 25*C and 760 mm. Hg pressure. * Approximate milligrams of particulate per cubic meter of air. A Numbers, See Appendix A MINERAL OUSTS SMttim aar-r.f SILICA Crystalline Quartz, Threshold Limit calculated 250 from the lormula........... ................ ...... ..%SiO* 4- 5 Cristobalite Amorphous, including natural diatomaceous earth __ _____ __________ 20 SILICATES (less than 1% crystalline silica) Asbestos Mica ___ ______________________________ Soapstone ____________________________ Talc Portland Cement 5 20 20 20 50 Miscillieeaat (less than 1% crystalline silica) 50 Caamsiaa factors mppcf i 35.3 = million particles per cubic meter = particles per c.c. Million of psrtldoi pr cubic foot of air, based on Implnfor samples countto By i<(M-fiald technics, t The psreeauta of crystalline tlllca la tha formula la the amount determined from alr-boraa aamplaa, aacapt In those Instaacat In Milca athar malhoda have boon (hoam to ho oppHcoUo. t 19U hmrtalon. TENTATIVE VALUES P*m' tet/M C tert. Butyl chromate (as CiOJ-Skm ................... t Calcium oxide ............................... Camphor ............ ................ t Copper fume ............................... Ousts & Mists ......................... DDVP10. 0-Oimethyl-2.2-dichloro- vinyl phosphate) t Oemeton (R) (Systox) ................. Endrin (1.2.3,4,10.10.hexachloroG. 7epoxy),4.4a. S.S,7,8.8a-octs hydro 1.4- endo-5.8-dimethanonaphthalene)--Skin ................ Epichlorhydrm ............................ Ethanotamine ................................ t Graphite ......................................... t Hafnium ...................................... Heptachlor 11.4,5.6,7.8.8aheptachloro-3a.4.7.7a-tetrahydro-4.7-methanomdene) t Methylamine .................................. t Melhyl Methacrylate .................... tC Methylene bis phenylisocyanale t Mineral Wool If iberglas) ............. t Naphthalene .................................. Oil (mineral) .......................-.......... t fl-Propiolaetone ........ .................... t Silver .............................................- t Tantalum ........... -............................ t l.l,l,2.-TetfKhlofo-2.2,-difluoro- ethane .......................... -............. t l,U.2-Tetrechloro-l,2- difluoroethane .......................... t Tetraethyl lead ............ ................. t Tin (inorganic compounds) --...... (organic compounds is Sn) --Skin ___ _ _ __, -- 5 _3 -- 25 100 0.02 10. ___ -- 1000 500 -- _ 0.1 5 2 0.1 1.0 1 0.1 0.1 19 6 15 mppcf 0.5 0.5 31 410 02 2 50 5 A* 0.05 5 8340 4170 0.075 2 0.1 f 1903 Additions. ... ' Parts of vopw or iaa par million parts sf sir W tenures SA*? mfuignSs pSStS*. par cubic mater * sir. A numbers, Ssa appendix A - Apptndix A A< eoMtes. Because of high incidence of tumors in man, any exposure, indudmf Madder skin, is BCC3216extremely hazardous. IAM021608 6113 18465