Document EqeawJk5Z95VVLqkqJ0mLB9w4

t rP': D. D. McGREGOR " ROCKDALE WORKS MR. H. A. SEMKEN ROCKDALE WORKS February 26, 1970 RE; INDUSTRIAL HYGIENE SURVEY, AUGUST 8, 1969 Please refer to Mr. T. B. Bonney's letter, same subject, dated January 9, 1970. I have initiated an EWO to design and purchase a small dust collector to use with "dry" cutting in the brick shed. I believe this to be the proper, "Long-term", solution to this problem. . V D. D. McGregor DDM:jg - rz.0/9} ARCH 18757 T. B. BQNNEY PITTSBURGH OFFICE MR. H. A. SEMKEN ROCKDALE WORKS / January 9, 1970 RE: INDUSTRIAL HYGIENE SURVEY. AUGUST 8, 1969 An item in the captioned which I had previously overlooked was recently called to my attention. Iirefer to Note 2 on the last page which states that asbestos dust exhausted out-of-doors is blown back into the working area through the open doors. As you know, asbestos now enjoys a terrible and well-publicized reputation. Even without the publicity it would merit some respect. Because of this, we feel there is good reason to take corrective measures to make certain that asbestos dust is not exhausted into areas where men are working. Relocating the exhaust may be all that is necessary. On the other hand, if the amount of dust and the frequency of its generation warrants it, a dust col lection device may be necessary. We'd appreciate your assessment of the problem and letting us know what, if any, -corrective measures have been taken. T. B. Bonney TBB:mh ALCOA ARCH 18758