Document pBKe3kwVJwMdwO5LGqZEjXrr7

FILE NAME DuPont DUP DATE 1972 Apr 13 DOC DUP018 DOCUMENT DESCRIPTION Letter to L.B. Wilson Jr. from Richard J. Hubiak RE Asbestos 0.0022 0.0022 0059 L. B. Wilson Jr. Safety and Protection Supervisor Textile Fibers Department Chestnut Run Administration April 13 1972 10-23-86 Morgan EXHIBIT DATE 10-23-86 16 MASTROIANNI & FORMAROLI ING CERTIFIED SHORTHAND REPORTERS HOITT Latter SECM Ls WILBON JF tS Morgan Morgan 2/24/72 2/24/72 ; Chestnut This letter concerns my visit to the 3/7/72 At this time & review was made of containing materials are handled Run Laboratories un typical operations where The areas observed were OE,Elastomers Lab - handling of loose fibers OE, Textile Research Lab , Operations ~ cutting of asbestos on clicker 3 Contral Maintenance - cutting of asbestos insulation paper Elastomers Lab is generated but the hood aids in controlling The Asbestos is transferred from work is performed in a cancyy a fiber pack drum to a gallon container hood enclosed on three sides Some dust it The frequeofntchiys of handling A MA with the asbestos Dustfon 77 respirator was worn by the person working Textile Research Lab, Operations A alicker or shearing machine is used to cut sixteenth inch thick asbestos paper This operation is done two or three times and requires about 15-30 minutes Handling of this per year a minimal amount of dust material created only . Central Maintenance Maronite insulation manufactured by Manville was out on a band saw Estimated time spent outting asbestos was about fifteen minutes per week An additional fifteen minutes is required to aleamp the area te ne ee In reviewing this entire I don't think that there is operation with the precautions now taken believe that a few changes coaunldasbestos exposure problem , However I points to consider are further improve the situation Same building exhaust 1 Return to using the asbestos does not pose an The frequency of cutting enviromental hazard The vacuum placing 2 If item 1 is not acceptable then consider tohrepaper filter similar to those used in vacuum cleanearsclaotth mmediately 3 Improve the enclosure below the around the blade in the section table is not affected But do so only if the operation of the saw 4) It would be advisable to have fibers determined when airborne concentrations of asbestos there are changes in established operating requirements the CSHAct In summary I don't feel that the problem at the Chestnut Rum Location present exposure to asbestos is a At the there was little or no dust generated and first two locations mentioned brief short The Central Maintenance the length of exposure was very Also the work generates dust but exposure time is of respiratory protection provided the workers meets the CSHAct . RJH ORIGINAL SIGNED BY RICHARD J. HUBIAK Richard J. Hubiak Industrial Hygienist