Removal of these natural, protective barriers can lead to drying and chapping such aa occurs with expooures to paint thlnners.

While no guarantees can be given I believe it k'E 0008251 N9647 -2 reasonably certain that Caltex, Shell and B.P. will not indulge in any advertising campaigns which make direct reference to 'lead', 'T.M.L.* or 'Methyl* unless they have reason to suppose that Standard Vacuum plan to make a sales "gimmick" out of this material.

There is, for example, no reference in it to the nature of the compound of lead in the atmosphere, or its state of subdivision of the particles.

si t & LEAD INDUSTRIES ASSOCIATION, INC SSt MADISON AVINUS NCW YORK* N.

Approximately 50 per cent of the year-end backlog was for hy draulic products, which ordinarily take a longer lead time from order to shipment, CAPITAL EXPENDITURES Capital expenditures for 1963 were $11,124,000 compared to $11,568,000 in 1962.

* that DDE causes a metabolic Ha said that damage to disturbance In birds which eggshetla from DDT can ^a r leads to thin eggshblis. .

The liquid Aroclors are good solvents for the normal fats and oils on the skin and repeated exposure will lead to drying and chapping.

Academic instruction leading to the Masters Degree in Public Health li-.jttrial Health) can be obtained in one year.

-It ts a .i- dry- factory-a lead blaad of varmicullca. gypaun, orgaaie (ooa-aaboatoa) ____ fibera tod a email quantity of aa air oaeraiaiag agaae.

In addition, prolonged and repeated skin con tact may lead to skin irritation.

The following is his account of the events leading up to the article which appeared in the Philadelphia Evening Bulletin on November 6.

Elliot After our phone conversation of July 8 I discussed the use of asbestos fiber in modeling materials with our medical staff We recommend to our customers the use of precautionary practices when handling asbestos fiber to protect from dust inhalation At Manville we have rigid precautions to be observed by our own personnel when working with asbestos Since there is a remote possibility that those handling Fibro Clay could inhale some of the dust we must in good conscience recommend to you the replacement of the asbestos fiber in your product with another material Inhalation of asbestos may or may not lead to in the lungs of the person exposed However we feel this risk should not be taken pathological abnormality since it could occur Very truly yours EMF ame E.

These lead to a Cyclone Collector outside.

I spoke with Katharine Boucot about Claire Patterson's lead paper and your comments.

The Kettering LaboratoryUniversity of Cincinnati College of Medicine Eden Avenue Cincinnati, Ohio 45219 Dear Bob, The enclosed manuscript, "Lead Exposures and the Derivation of Maximal Allowable Concentrations and Threshold Limit Values," has been sub mitted for publication in the Archives of Environmental Health.