ASAJRCO INCORPORATED ORE HAHDLIHG AND SINTER PLANT JOB NO. 7635 ADDENDUM NO. 2 "July 11*, 1978 TO SPECIFICATION FOR PIPING - SUPPLY AND INSTALL Spec.

January 12, 1968 Mr.

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ASARCO Department o4 Environmental Sciences September 1, 1978 Mr.

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CM DUXN KACAL ADAMS PAPPAS & LAW PC (WED) 9.20'00 1 7:08/ST. 17:06/NO. 4862474999 P 3 NO. 98-3444-H JOSE ALFARO ANZUALDA; JAMES W.

ASARCO ALV 0000931

15 November 1978 Medical Department Charles H.Hine.M.D.

ASARCO ALV 0000122 ASARCO ALV 0000123 Production Asbestos fiber, silica, and Portland cement are tne three essential ingre dients of asbestos-cement (A C) pipe.

S' *. > 1 El Paso, Texas November 4, 1976 t' G Department of Environmental Sciences Salt Lake City Office .

S December 1975 Mr.

AT&T Asbestos Awareness Course #600519 RECOGNIZING SUSPECT ASBESTOS MATERIALS (Continued) DAMAGE AND DETERIORATION HOW ASBESTOS CAN BE DAMAGED OR MADE FRIABLE Physical contact Cutting, sanding, breaking or otherwise abrading Deterioration through: Vibration Water Damage Air movement Delamination (separation from the backing) HOW TO RECOGNIZE DETERIORATION Look for: Frayed material Surface changes Dust or debris below or down wind Material in airstreams Material fastened to vibrating machinery Evidence of water leaks 11 ATT-NJ-DEG-0077598

( S (O (' A513EETOD TI'aTIL;.

III ATT_.ZAi;C D, V/, Widr.ayer, Fresider.