78 1955 National Safety Congress Experience in bis own field will enable the plant and manufacturing engineer to recognize and avoid the ttse of noisy ma- dunes and processes when possible.

Industrial Hygiene Digest Februarr, 19S6 INDUSTRIAL DUSTS 240 Silicosis Rlak in Relation to Silica Doit la the Environment and to Length of Exposure tq a Ceramic* Factory.

industrial Hygiene Digest June, 1957 793 Pulmonary Effect* from Radioactive Thallium-Activated Clay Particles.

98.

Industrial Hvaiens Digest Augutf, IQMl professional groups in the filed of occupational health* In these studios both sociological and economic information should be developed and should provide a baseline for evaluation of engineering in relation to specific occupational hazards, Authors1 conclusions 809 Weigh Odor Control Methods Carefully, W.

EXHAUST SYSTEMS, GENERAL b COMFORT VENTILATION TABLE 28-P HOOD FACE VELOCITY (FPM) TO MAINTAIN A CONTROL VELOCITY OF 30 FPM AT RANGE Side Ratio (XT'L) Distance X from Hood Opening to Worenc Area 045JV 05W 075W W 1.25W 15W 1:1 Free hanging....................... 40 1:2 Shed type............................. 1.2 Free hanging....................... 24 1:4 Shed type............................. 1 6 Shed type............................. 120 40 60 24 16 800 77 120 40 27 120 215 60 40 170 355 90 60 240 120 80 Bsprlnted with permission from 3.

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1 i^^P-ray Diffraction I) and Dispersion Stainlination of Quartz in >c.

n < i r (t ft GENERAL CHEMICAL EXPOSURE (1) MONSANTO STUDY - J.

mCHMBff 3.1 Mortality-study COLUMNS ITEM 1-4 ZO nunbar 5-6 Starting ytar for subject's plant 7-10 Month and yaar born 11 Vital status as of 12/31/72 12 kacord status 13-14 17-lfl 19-22 23-26 27-2S 29 Month and yaar hired Tsars worked Month and yaar of death Causa of death Ago at death * Race if dead 30-33 34-31 Month and year VC exposure started Tine weighted total 39-41 Total Months exposed CODE Nunber Data Data 1 alive 2 dead 9 unknown 1 working 2 retired 3 terminated 4 died an employee Date Nunber Date ICO 1955 Nunber 1 white 2 black 3 oriental 4 Spanish American 5 Aaerlcan Indian 6 Filipino 7 other Date Carried to 1 decimal place Unknown-blahk Number Unknown-blank CMA 012405 COHORT BY TYPE OF PLANT AND YEAR RECORDS BEGIN PRIOR TO 1959 19591960 COMPLETE RECORDS: PVC VCM PVC/VCM OTHER TOTAL 4,828 102 559 739 6,220 & i ' 93 - 93 INCOMPLETE RECORDS: PVC VCM PVC/VCM OTHER TOTAL 289 577 23 331 45 383 - ' '/ ' 68 SUMMARY: PVC VCM PVC/VCM OTHER TOTAL 5,117 679 890 1,122 7,808 93 23 45 - 161 AFTER 1960 1,511 50 - - 1,561 181 462 -- - 643 TOTAL 6,432 152 559 739 7,882 470 1,062 376 383 2,291 1,692 512 - 2,204 6,902 1,214 935 1,122 10,173 CMA 01240A PLANTS WITH INCOMPLETE DATA PRIOR TO 1959 BEGINNING DATES 1959-1960 AFTER 1960 TOTAL #11 92 #10 45* #3 86 #12 383* #16 23 #9 119 #14 104 #13 67 #26 289 #23 57 #27 331 #24 133 #29 281 #31 181 Total 1,580 68 643 2,291 *Data collected by TCA but returned to company at close of study SUMMARY: PRIOR TO 1959 Number of plants: 6 Number of companies: 2 Companies included: Dow Uniroyal 1959-1960 2 0 AFTER 1960 6 3 Allied P.P.G.

Monsanto Cf At Texas City To S.

WARNING LABELS A Guide for the Preparation of Warning Labels for Hazardous Chemicals MANUAL L-l Third Revision--1953 PRICE ONE DOUAR Published by MANUFACTURING CHEMISTS' ASSOCIATION, INC. 246 WOODWARD ILDG., WASLHNGTON 3, D.

July 1st, 1955 Dr.

June 20, 1950 Mr.