feature PCB's--prevalent and persistent Intensified research is needed to minimize their dangers Carl G.

Heavy air pollution with asbestos dust leads to the classical form of asbestosis, A decrease in asbestos dust possibly prqvi^les the time necessary for the development of the carcinogenic effect of asbestos.

Water leading -the top -section. is split s with-socae. being discharged at a.

c "P Editors: Laur --crrrrssmiic.

In the lungs there is development of what is known as catarrhal-intraparenchymatous inflammation, leading to atrophy of the inter alveolar septa.

Kcpraued :r jiu AMERICAN l.NDLsTKIAL HYGIENE ASSOCIATION JOURNAL Volume JO.

R&S 041205 Reprinted from AMERICAN INDUSTRIAL HYGIENE ASSOCIATION JOURNAL Volume 30, November-December, 1969 Monitoring Exposures to Vinyl Chloride Vapor: Breath Analysis and Continuous Air Sampling EDWARD D.

1120 MINUTES of the one hundred seventieth meeting of the Directors of the Manufacturing Chemists' Association, Inc. , held at the Union Club, New York City on Tuesday, October 10, 1967 at 11:00 a. m.

high concentrations leads to accumulation/ the lymphatics sin rounding the pulmontj vessels. 1 hese deposits are seeen in the X-n* pictme if the mateiial is radio-opaque-a# sidciosis, baiytosis and anthracosis, Itadiology ol Some Um cr Dust Discuses TS* Itble I.

Instead, it was assumed that most matings leading to fertilisation would occur 2 or 3 days after intro ducing female mice to the cages containing males.

. *300 FLANGES, Lead, Copper, GafraaIsed, Rod Boiplrx Mfg.

National Lead Co- New York.

J yvL' r.v VLi'.

PUBLISHED BY THE MARINE DEPARTMENT, HUMBLE OIL & REFINING COMPANY Vol. 11, No. 10May 15, 1969 On-the-Job Training Program to Qualify Men as Oilers Esso seamen with mechanical ability now have an opportunity to learn while they earn in a new engine department on - the - job training program set up to qual ify them as oilers.

AIA-7 SWETONic-Direct 14 1 2A Q What kind of research did you do?