Document wrQe1GX12wJo04keyQV4MZ39V

FILE NAME Corning OC DATE 1947 Apr 7 DOC OC010 DOCUMENT DESCRIPTION Internal Memo RE Dust Counts OWENS:-CORNING OWENS CORPORATION FIBERGLAS CORPORATION CORPORATION EXHIBIT - ... T 3 eveevsnir K328 Z2G Anenice af MP MOPANDC POR RECORD Attention MEMORANDUM MEMORANDUM MEMORANDUM RECORD From = Mr. Morrison Laboratories . Newark. Ohis 7 1947 1947 Mr. H. W. Collins Collins McCrory Smucker D. McCrory A. Smucker Smucker L. P. Biefeld Biefeld R. ' Morris Morris' rrr INTRODUCTION counce were made in the Dust counts counts made in InsuIlnatsiuonlation Cement Department determine determine the extent MVAPY million The average concentration of The average concentration concentration concentration 12 asbestos dust on the first foot air air cement department was on the second particles floor per cubic million particles particles The asbestos asbestos concentration concentration concentration was 12 25 million million particles The Obie Department of The Ohio Department Department of dust per exposure Health air is has the recognized 5 millon concentration for maximum allowable an concentration for an RECOMMENDATIONS Possible solutions solutions the dust problem are 1, Substitution Substitution another material for asbestos 2. Installation Installation more more efficient local exhaust systeng, 3. Furnishing suitable 3. be respirators for the continuously operators These shocld DISCUSSION Dust Dust counts were the using operator operator possible possible at at breathing level using order order order approximate apcroximate the dust concentrations concentrations concentrations the dust concentr-.tions Dust compositions compositions determined petrographically by the Glass Fesezures aSmeovuenrtasl Saemvoeurnatls different asbestos types cement being being mixed when contained asbestos shorts shorts wool nodules dust soep varyins contained shorts glass woo) nodules Bentonite Bentonite soep were case nodules, Bentonite aod 02 02 203 ' 127:3) -20 RESULTS OF DUST CONS First Floor Removing bag weighing operations - 15-30 million particles ft 50 of operators time ) Bag filling and other operations 50 of operators time 10-20 million particles ft Average concentration - 12.5-25 million particles ft Dust composition - 50 asbestos asbestos concentration - 7-12 million particles ft Average Second Floor Weighing and charging mixer 30 of operators time Mixing operation 70 of operators time - 30-50 million particles ft = 10-20 million particles ft Average concentration - 15-30 million particles ft Dust composition - 80 Average asbestos concentration asbestos 12-25 million articles ft A. R. Morrison 506 Chemistry Laboratory