Document J3ZqV96ReJ1dXJJ5n42DK2mRB

E. 1. DU Pont dk Ncmours & Company WILMINOTON. OOWANK MM %u iinccnimci scMirrMtNT June 26, 1962 H. D. 3oyce R. J. Ham J C. Lang R. K. Mason W. C. Weaver FIELD PROJECT MANAGERS F. C. 3AYLIS, ASHTA3ULA W. S. SRIGC-S, 3EAUK01JT J. J. BELL, BREVARD - A. P. GAT, CAPE FBAHbuk,ii,',b"^ C. S. ANDERSON, CHAMBERS WORKS W. S. FREE, CHATTANOOGA K. S. STANTON, JR., CIRCLEVILLE K. G. CAUGHMAN, JR., HOUSTON R. H. DAVIS, KINSTON R. G. STERNBERGES, LOUISVILLE J. K. ADDISON, MARTINSVILLE w. aJ samans, may A. S.1 TRUMPORE, MEMPHIS H. F.] REDMILE, OLD HICKORY miniaaq,. PONTCHARTRAIN FEINEN, SAVANNAH RIVER DRAWDT, SEAFORD HINSON, VICTORIA SPITZ, WASHINGTON WORLD S. KREWATCH, WAYNES30R0 G. E. BARLOW, JR., WILM. AREA ATTENTION: SAFETY SUPERVISOR DUST CONTROL EQUIPMENT "e are forwarding under separate cover the necessary accessory equipment to administer the above subject air sampling program. Mailing Tube - Enclosed in the package -cu will find six mailing tube* in which the air sample filter, along with tha required copies of the work sheet, are to be used in mailing the samples to Dr. Corn at the University of Pittsburgh. A future supply of these tubes nay be obtained by contacting the Division Safety Office. Battery - One battery is also enclosed which is to be used in UNIDO Model L40-B air sampling instrument.| Due to the porosity of the filter used in air sampling, the maximum life of a fully charged battery is five hours. In the futiire, when making air samples, one battery should be used a maximum of four hours; then replaced with second fully charged battery. Vcrk Sheets - Enclosed are twelve sets of ICR technical information work sheets. One carbon-, after recording required information, should be retained at the site location; ttie original and one carbon should accompany tha sample submitted to the University of Pittsburgh. Additional sets of work sheets as required 'may bs obtained from the Division Safety Office. |-' Callbration end Repair cf _Inatru!HBnt. - Effective immediately, all instruments requiring calibration, adjustment or repair shall be forwarded to the Division Safety Office. Due to the overload of work, Adrian- Linch at Chambers V'orks will bje unable to continue calibration of the instruments for us. (OVER) DUP 0913289 cttcm TMiMae roe ecrrse uvns .. rttmcu*^ ewcMiemv DU 030118 2 Filters - Requirements Division Safety Office for new filters should be directed to he * our usual compliance is anticipated. CONSTRUCTION DIVISION K. D. Keuppr Division Safety Superintendent KEK/dlm DU 030119 DU? 0313290