Document NEeqdm7JRkE7n79gkYRKBma9V

[?Gp8(]8(l](Z]8cr' DIVISION OF GENERAL MOTORS CORPORATION DAYTON 1, OHIO March U, 1957 Mr, DeWitt Huffman Safety Engineer The Industrial Commission of Ohio division of Safety and Hygiene Departments of State Building Columbus 15, Ohio Dear DeWitt: I recall that you described the method that you used for determining the concentration of hydrochloric acid in the stack discharge from a pickle machine. We are preparing to make such a determination and I would appreciate your sending me a written description of the method you devised in detail. I looked over the notea you made on your last .visit and am a little confused regarding the amount of air required to cause a one part per million HC, analysis. Also, would you tell me where methyl purple can De obtained in the local area. I will appreciate any information you can give me as soon as possible. Sincerely yours. HSK:tls Industrial Hygiene and Sanitary Engineering J- S'-1' 7 tfFticiAArots (iterate mahgu eucruc wajh maths toao faunas automatic washhs * (iterate uartas <aoNtas ofHUM/tww** tHSKWASHHS OISTOUU * At* CONOi7tO*ta$ tCt CUU AAAKtMS WATfi COOttMS tCg C*$AM CA$JN(7S atACM-lH *tt*}Gt9A70*i COMTttSSOtS January 2* 1957 Dr. M. H. Shafsr, Msdioal Elroctcr Frlgidaire Division, Osnaral Motor* Carp., 300 K. Taylor 3t., Dayton, 0. Dsar Dr. Shafort Raoon&ly I had scoasioa to coctaot H* 9* Ilina, your industrial hygisna saginoar, on * problsn ralatiws to dormtills which occurred la soother plsat Mr* Kilns* s/* m very 1 bslpful to as. </. Vhllo oa this subjsot* X would liks to stats^that X apparocints vary mah ths industrial hygisns prcgran which your towpmy Is following. Tour standards ars auoh higher than vs would arbitrarily sxpoot a eoapoajr to follow. I also want to say that I haws appreciated vcrkinc with Mr. dins and bars a rry high rsgard far the sxeollsncy of his work* Vsry truly yours. dhtgv DsVitt Bafftwa, Industrial Eygian* Englnssr nnn UMtrrii-