In investigating this anomaly, the authors found that significant amounts of extraneous sulfate can be formed on glass-fiber filters, presumably by oxidation of atmospheric sulfur dioxide, thus leading to highly inflated values for particulate sulfate as determined from short-term samples.

The comnon uses of commercial PCB would not normally lead to its release into the natural environment.

The process of public review leading to open consensus forms the very cornerstone of scientific practices by which ''factual" know ledge is established.

BARNABA, 8 . 3 7 .6 0 .9 1 - 5 8 .16.4 0 ECV/kw - Prot. 284 j Dear Professor Kehoe, Below are the results of the lead analyses made on duplicates of the samples we sent you on September 14 by air mail: , Sample White flour Maize flour Rice Macaroni Sugar Wine Micrograms Pb per Kilogram 100 70 , 70 80 140 172

normally lead to its release into|the natural environment.

Sawyer, a leading researcher on tion, "friable" asbestos--so called becausaesbitestos health effects and an occupational crumbles easily when disturbed--will flake health adviser to the EPA and a list of corpo off the surface on which it was applied.

BROWNSON: 1 object as leading. 19 MR.

However, public presseure is on them and we do not know what this can lead to, * It will certainly not make it easier for us to sell PCB and we might loose certain outlets.

Several .directions were suggested involving lead handling, spraying, and use of asbestos.

The main objective of the study was to explore methods for a systematic approach leading to definitive computations explaining Denver pollution.

Plant worker replacement--based on a spot survey of leading industrial companies--averages out to about $3, 700 per worker; some authorities claim much higher.

Next, is the road marked "No Union" -- an empty road that leads nowhere except to still another NLRB election.

Again, your conception of what 6 this was leads you in the wrong direction.

Experts from Industry, Labor, Government and Academic Institutions will participate; Industry representatives will include leading executives of the Johns-Manville Corporation, the Owens-Coming Flterglas Corporation, tho Certain-teed Products Corporation and others as well ns ropresentatives of the Quebec Mine Producers Association and the Insula tion Distributor Contractors National Association; Labor represen tatives will include the President and appropriate staff members of the International Association of Heat and Frost Insulators and Asbestos Workers, while Interested government agencies will includo `the United States Public Health Service and the United States Bureau of Mines.

The major products of the photooxl- detion are produced by rupture of the double bond, leading to various carbonyl compounds.