Document Dvg8DpKo9G4XawjaOxEoBYvk5

w* ' vj - DEPARTMENT OF HEALTH. EDUCATION. AND WELFARE national Center For pusuc health service Urban and Industrial Health Iaft aw tJ y*tt krrvMia |AM Uiietf C*t**t* 1 Ohe* October 16, 1967' Hr* L. 0, Griffith, Jr. Works lianaser Pi ttsburgh-Coming Port Allegany, Pennsylvania hq-' ; ....!v;0,]S,vu^ .T> Dear Hr. Griffith: The prelininary results of the icpinger settles collected during our survey of the Pittsburgh-Coming insulation plant at Port Allegany, Pennsylvania are enclosed. These samples were collected and counted according to the standard nethod of the American Conference of Covemcantal Industrial Hygienists and are cosparable to the Threshold Lisit Value of 5 nillion particles per cubic foot established by that body. However, since these sanplea vere collected for the epideaiologic purpose of defining the everage exposure of e'group of workers in a operation rather than for the usual Industrial hygiene purpose of locating and evaluating the heavily exposed individual, tho results say not be co=?arable to industrial hygiene survey data. A cosplete report including the results of fiber counts on meobrene filters will be sent to you es soon as counting is collated. Your assistance end cooperation ere appreciated. Sincerely yours. Xnelosure ec: Dr. Grant Dr. Cralley Pennsylvania Health Dept. THIS DOCUMENT WAS NOT A RECORD OF PPG INDUSTRIES, INC. DIO NOT COME FROM IT'S FILES AND CANNOT BE AUTHENTICATED BY PPG INDUSTRIES, INC. Jereniah &. Lynch Asst. Chief, Environmental Activities Yield Studies Occupational Health Program J ---B--B----0--0--2--3--6---8--8-- -7 42Q3 Preliminary Report United States Public Health Service Occupational Health Program Dust concentrations as measured by impinger breathing zone (B) and general (G) air samples collected at Pittsburgh-Coming, Port Allegany, Pennsylvania on Apr!nl 10-14, 1967, Operation Hiring Peeder Ken - B C Forming Builder -*B C Finishing - fiats Operator - B Hater!&1 Handler - B C Packing Packer B Sarnie Wo, 206 116 103 111 114 123 222 203 142 125 134 136 151 131 * 140 133 Concentration swpcf 7,8 11.0 1,9 2,1 * 2... ' '* ,,- .^1 2,4 9.8 5.6 2,6 24.8 8.6 V. 3.7 4.2 6.1 3.0 i 3.2 5.1 \ V-' ,,! - **. .* fc S - T WAS NOT A RECORD OF 3, INC. DID NOT COME FROM CANNOT BE AUTHENTICATED -- *Mr> tMEDICvT O'b'tCiOb OQ J 3 ir;i 'iC iAED 4284