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

We had the advantage of lead time for planning provided by the alert responses of corporate management.

PWliCtfafat, fs.1; YfiMutNu IdMhfid ht OutofvifMtiMi d Lw CfiMusmtifiM d lead ia fair*.

Relatively important fluctuations remain however; with the highest peak ratios leading to the highest age coefficients. - For short half-lives, there is little increase in concentration with age.

It norms ,lnell\ as the sulfide, grecnockile, in various zinc, lead, and copper ores.

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

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

Total 0 - <0.10 % % METAL LESS THAN or ACTUAL (Parts Per Million) - % Arsenic B< 5 < 500 - % Barium < 100 - % Cadmium B< 1 n< ioo - % Chromium B< 5 - % Lead B< 5 < 500 - % Mercury B< 0.2 < 20 - % Selenium 0< 1 < 100 - % Silver B< 5 - % Chromium-Hex G< 5 < 500 Please note.

Either we lead, or we trail behind.

Wi&K 1965 ANNUAL REPORT INDUSTRIAL HYGIENE FOUNDATION MELLON INSTITUTE 4400 Fifth Avenue Pittsburgh, Pa. 15213 exhibit INDUSTRIAL HYGIENE FOUNDATION OF AMERICA, INC.

Liquid Red lead (modiiied) ....

Wi&K 1965 ANNUAL REPORT INDUSTRIAL HYGIENE FOUNDATION MELLON INSTITUTE 4400 Fifth Avenue Pittsburgh, Pa. 15213 exhibit INDUSTRIAL HYGIENE FOUNDATION OF AMERICA, INC.

Heppleston Department of Pathology Welsh National School of Medicine Cardiff IN discussing the pathology of the pneumoconioses it is essential to distinguish asbestosis a variety which is caused by minerals with a librous structure from those varieties due to particulate nonJibrous minerals such as silica coal and h^matite Numerically the second group is the more important and will be considered first taking as types classical silicosis and coalworkers pneumoconiosis each of which assumes a simple and a massive form Simple Pneumoconiosis By simple pneumoconiosis is meant the pulmonary reaction to dust uncomplicated by any other factor and the term thus refers to the essential manifestation of the disease Characteristically it takes the form of numerous small focal lesions composed basically of dirt and fibrous tissue in various proportions These lesions are Increte and measure up to about 5 mm in diameter they are more o less evenly scattered throughout the lung substance but may be somewhat larger and more numerous in the upper than in the lower parts To appreciate the mode of development of dust lesions eference must be made to the normal anatomy of the respiratory portion of the bronchiolar tree The terminal bronchiole that is the last order of nonrespiratory bronchiole gives rise to three successive onders of respiratory bronchiole i.e. those bearing alveoli before the single order of alveolar duct is reached the alveolar ducts then lead lead to atria and alveolar sacs Heppleston 1953 Dust deposited in the alveoli is ingested by phagocytes which attempt to eliminate the dut up the bronchiolar tree or to transport it to the lymphatic system Dust may also move along airways and into the interstices ot the lung as free particles but evidence of this is not easily obtained Small accumulations of dust are found in relation to the 23 Sc SI ay J.

Y-4000 Code Liquid Red Lead (modified) Y-506 Nu-Pon Cote Cleaning Solvent Y-5568 Nu-Pon Cote Floor and Dado Enamel Enamel ConverterY-5242 Light Gray_________Y-5571 Medium Gray............. .............

Lead do.