Document mp640JKXjwd2rdYN6EQnVEgDQ

rouM nai mv. 44.li PITTSBURGH CORNING CORPORATION July 2, 1969 .A v : . ,!f.' ' i ", i & Hr. Wendell R. Blair Regional Director U. S. Department of Labor Bureau of Labor Standards 601 Mayflower Building Dallas,/Texas 75201 l J U ' 1. i ; "" NOT CO:,i j r; .L ivi r ru iuhS Dear Mr. Blairt Dr* Morton Corn, Professor of Industrial Hygiene, Graduata School of Public Health, University of Pittsburgh, performed an industrial hygiene survey of our Tyler, Texas plant recantly. A copy of his report which you requested in your June 16 letter is attached. ^ * AV *T ' All persons working in areas where the report shows dust levels in excess of the threshold Halt values have been required to wear a dust respirator approved by the U* 8. Bureau of Mines for Pneumoconiosis producing, , r;_. and for nuisance dusts. They will continue to wear such.respirators until J the dust exposure has been reduced to~safe levels.' The Central Engineering Department of our company, with the assistance of Dr. Corn, has initiated k design program for complete dust control and collection in this plant. The total program Including installation is scheduled for completion by mid-February, 1970. - If you need additional Information, please advise. - t ; *. Tours very truly, -Hj. Jj' PITTSBURGH CORNING CORPORATION BMS/rb Attcb. ByrKM. Stout Vice President of Manufacturing cc: Dr. L. B. Grant, M.D.J fiT 0022376 l Mr. H. c. Underwood*"(attch.) Mr. J. H. Blerer / Mr. E. W. Holman THIS DOCUMENT WAS.NOT A RECORD OF Mr. C. E. van HornppG INDUSTRIESJNC. DID NOT COME FROM 5269 IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES,' INC. i fb))