Document pebw5K3k6E53dbL23p1Qv0bG7

With respect to nature of the hazard or process, the investigations were distributed as foltows (Table II): TABLE II DISTRIBUTION OF FOUNDATION INVESTIGATIONS BY NATURE OF PROBLEM (10.17-1045) Operation or Exposure Percent of Tout Studies 1. Dust exposures--silica, asbestos, nuisance dusts.......................... 41 2. Various chemical exposures .......................................................... 21 3. Metal fumes: welding, soldering, cutting,foundry........................ 0 4. Metal cleaning, plating: degreasing, acid mists,chromic acid.... 0 5. Dermatitis ........................................................ 6. General industrial hygiene surveys ........... 5 7 7. Studies of atmospheric pollution ................................................. 8 8. Heat, ventilation ............................................................................... 3 Summary of Activities, 1946 In continuation of this work, a total of 51 separate plant investigations have been conducted thus far in 1946, involving the collection and analysis of approximately 2,500 samples, including over 1,200 dust determinations and studies of dust composition. Greatest emphasis has been placed oh the dust-producing industries during the year, but n variety of chemical opera tions have also been studied, as In the past. Table III summarise* the work in 1040: TABLE III SUMMARY OF FOUNDATION INVESTIGATIONS. 1940 Number of separate projects....................................... 24 Number of separate plant studies ............................ 51 Distribution of projects, by nature of problem Dust exposure and control ............................... 10 (35 plants) Chemical toxicological, miscellaneous................. 6 Lead exposures....................................................... 2 Community atmospheric pollution ..................... 2 (4 operations) Dermatitis .............................................................. 2 Metal fumes ........................................................ 1 Heat exposure ....................................................... 1 Number of analyses ........... Dust .............................. Lead .............................. Miscellaneous metals ... Miscellaneous chemicals .............. 1274 275 345 GG5 2569 28 29