Document ym85Bo70gnoEQ288nbdov71qr

< ry^tf-AXC DTMUMOM E. I. du Pont de Nemours & ligrinr ijaarm Savannah River Plant P. O. Box 117 Augusta, Georgia ENGINEERING DEPARTMENT CONSTRUCTION DIVISION December 9, 1966 PANY ft l C ^Al 3 rf- C. A. D'ALONZO, M. D. EMPLOYEE RELATIONS DEPARTMENT MEDICAL DIVISION WILMINGTON, DELAWARE CONSTRUCTION - SAVANNAH RIVER PLANT Reference is made Co your letter of November 8, 1966, which, in item 1, requested certain data concerning the use of asbestos-type materials at our project. The following data are submitted: A. All full-time insulators are employed by a cosc-plus-fixed-fee sub contractor (presently North Brothers, Inc.), and the number of employees varies depending on work load. For the period December 1965 through November 1966, the average number of employees has been 14, with a low of 5 and a high of 29. B. The only other craftsmen doing any work involving insulation uterials are carpenters. Over the period as noted in Item A above we have averaged 30 carpenters (employed by Du Pont), with a low of 23 and a high of 39. They do very little actual Insulating and this involves "batt" type insulation, normally flberglas. They do, however,all of the cutting of translte siding material (asbestos board), and at present it is estimated that each carpenter may be Involved in this type of work as much as one to two days per month. C. The three moat prevalent types of Insulating materials are: (a) Calcium silicate (b) Urethane (polystyrene and polythene) (c) Flberglas By far the greatest amount of material presently used is urethane type. ASR *-l DUP 1110096 C. A. D'Alonzo, M. D Page 2 December 9, 1966 D. We are doing no spraying of insulating materials. 8. (a) Asbestosis - Mona (b) Mesothelioma - One, a carpenter (c) Carcinomas among Insulators - None to our knowledge P, (a) When sawing or cutting insulation materials in the Insulation Shop all saws are equipped with exhaust air systems at the saw to remove dust. When sawing transits a vacuum cleaner is used to control dust from the sawing operation. (b) The largest amount of insulation removal in recent months has been from large vessels situated in the open (no building enclosure). (c) As noted under Item D above, no spraying of insulation material at this location. We trust this information will be of assistance to you in your over-all survey. H. J. FEINEN G. A. Tice, M. D GAT:me I ! 10097