Document 6Ryaq2jjYBdgoz8N5bpY7my36

14* t INTERNAL CORRESPONDENCE--------- CHEMICALS DIVISION ' wsmuu puht p. o sox zmi. chajuisjon, wist Virginia 25430 (Ntm*; Mr. K. B. Lanhara Insulation fabricat ion Shop Bldg. 511 - Room 2018 Mr. F. G. Ccmerford Mr. J. M. Fallon Mr. P. E. Henry Mr. t. H. Ketdian Mr. D. R. Matheny Dr. R. J. Sexton Mr. Frank Shaffer Mr. L. B. Weddell Mr. Fred Williams 24 August 1955 0,n. Industrial Hygiene - Plant 512 .'lief DUST SAMPUHG OF "CAREY-TTUP" INSULATION We have received results from the dust sampling series ocnducted in your shop while the head grinder machine was being used to cut "Carey-Temp" insulation block. " These results indicate that the-hazard to health from dust exposure during this operation is very slight and should not present any serious respiratory problems to the machine operator if conducted in a similar manner to the test runs. During our conversation, you mentioned that you anticipate moving the machine to another location in the shop and also making certain modifications to the machine and dust exhaust system. It is our reccumendation that these changes be carried out to tfieir completion in the near future so as to further add to the adequacy of the system. In order to completely finalize this investigation, we would like to do another series of sampling when more "Carey-Temp" insulation is available and after the above changes and modifications have been made. If, in the interim period, you have any questions relative to these tests, please notify this department. JWshl A04880