Document 6BzKm2q8D1JZa18MV6Yz7kXJ9

FILE NAME Corning OC DATE 1947 Apr 7 DOC OC052 DOCUMENT DESCRIPTION Internal Memo RE Dust Counts a. Terza 0-031-0 OWENS.CORNING FIBERGLAS CORPORATION COMPANY CORRESPONDENC Atention of MEMORANDUM FOR RECORD Fromm Mr. A. R. Morrison Subject DUST COUNTS Laboratories - Newark Ohio April 7 1947 ce Mr. H. Collins Mr. R. Kele Mr. D. McCrory Mr. C. A. Smucker Mr. R. Morriser INTRODUCTION Dust counts were made in the extent of an asbestos dust Insulation Cement Department to determine hazard the SUMMARY SUMMARY The average concentration of asbestos cement department was 7 to 12 million dust on the first floor of the asbestos concentration concentration on the particles per cubic foot of per cubic foot of air second floor was 12 to 25 million air The particles The Ohio Department of dust per cubic foot of hour daily exposure Health air as has the recognized 5 millon particles of maximum allowable asbestos concentration for an RECOMMENDATIONS Possible solutions to the dust problem are 1 Substitution of another material for asbestos 2 Installation of more efficient efficient local exhaust systems 3. Furnishing suitable be worn continuouslyrespirators for the operators These should DISCUSSION Dust counts were made using the operator as possible in at his breathing level a Zeiss order to Konimeter approximate The samples taken as near the dust concentrations concentrations Dust compositions were determined Department petrographically by the Glass Fesearch varying Several different types of amounts of asbestos The cement are mixed in the department with contained asbestos cement being mixed when the dust shorts glass wool counis ere nodules Bentonite and soap zade 02 203 1273 1273 1273 RESULTS OF DUST COUNTS 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 e 50 asbestos Average asbestos concentration - 7-12 million particles ft Second Floor Weighing and charging mixer 30 of operators time 30-50 million particles ft Mixing operation 70 of operators time 10-20 million particles ft Average concentration ' 15-30 million particles ft Dust composition o 80 asbestos Average asbestos concentration ' 12-25 million articles ft A. R. Morrison ree Chemistry Laboratory 02 203 12 et fee ONO., ne FIBERGLAS OWINS.CORNING FIBERGLAS CORPORATION INYONGYTIC INYONGYTIC INYONGYTIC INYONGYTIC DITION DITION DITION ASON KIMORANDUM FOR RECORD fabifabion on DUST COUNTS DUST COUNTS Lalwatrtn Xive 026 April 7 1947 Mr. R. Kle Kr D. Nofrosy Kr C. A. Brucker Dr. L. P. Blofeld Mr. A. F. Morrison TARADORATION TARADORATION TARRADORATION Dust opents ** made in the Mulation Comet artent of an asbestes duat bazard bazard Deportment Deportment to determine the , The average concentration of asbestes dust on the first floor of the desent department department was 7 to 12 million particles par ouble foot of paasrbesotuoblse cfoonoctentorfataiiorn on the ard floor was 12 to 25 million paratiirclesThe The Chie Department of Health has gafted 5 milion particles of dust par cable foot of ale is the maximum allowable sabeston bour daily expense concentration for en LILCKENDARIONE LILCKENDARIONE Posible solutions to the dust problem aret 1. Substitution of another material material for asbestos 2. Installation of more officient local exhaust .: 3. Pbearvnaisrhaincgonstu^i>taaubslueslryespirators for the operators These should samples taken Dust count te mate wing the operator as possible 19 at bis breathing level & Zoe order to Koninster approximate The the dust an ear concentrations Dust sexpositions vere detorained petrographically by the Olage Research module module PLAINTIFF'S Several different types of cosent are mixed in the sts of asbestos The resent being axed when department with v^/rvine ocatained asbestos aborta glaar vool Benttohneitdeusatndcousnctasp ve PLAINTIF'S EXHIBIT 02 RESULTS OF ST CHES First Floor Removing bag weighing operations - 195-30 million particles St. " 50 af operators ixo Bag filling and other operations - 50 of operatora tizn 10-20 million particles ft Average concentration ' 12.5-25 million particles St. Deat composition @ 50 aubastos Avazbestos Avazbestos concentration - 7-12 million particles ft Second Floor Weighing and shanging afzer 30 of opiratore time m .30-50 million partieles ft , Wixing operation 70 of operatore time ' 10-20 million particles ft Average satration =| 15-30 million particles ft Post position 805 asbestos Average asbestos concentration ' 12-25 million articles ft 1. R. Morrison pee Chemistry Laboratory 02 203 1