TETRAETHYL LEAD (TEL) . 0.075 mg/ m^(as lead ) - S k in Fxten sive and ca r e fu lly co n t r o lle d m an ufactur in g exp er ien ce has in d ica t e d t h a t a ' le v e l o f 0.075 mg-per cu b ic meter o f a ir (measured as lead ) is a good gu id e lin e fo r an allow ab le a ir con cen tr a tion o f TEL.

The Tl % allowance permits the use of sufficient lead drier.

I refer here to the lendl of 0.09 mg. of lead per 100 grams of whole bloody, as the threshold for the occurrence of lead poisoning.

The allowance permits the use of sufficient lead drier.

LIA23922 LEAD INDUSTRIES ASSOCIATION, INC.

Kehoe, we conclude that tetram ethyl lead and tetraethyl lead (T E L ) a re no different fro m the standpoint of th e ir possib le effects on the' public health.

LIA23922 LEAD INDUSTRIES ASSOCIATION, INC.

I believe the simplest modification of the sign to make it both correct and adaptable, would be to use the designation "Lead Alkyl" where the sign now uses the words "Lead Tetraethyl."

Lead poisoning results from continued ingestion of lecd.

Lehman Patent Department Office of Counsel Rational Lead Company 111 Broadway New York 6, New York RCCCIVCD NATIONAL LEAD 00 JAN 3 1953 PATENT.

. - r -:_7 0 J j-i'I i CUIATK LEAD CGMiVi'NUS IN HZ A 1 8 INil.K t X i'L i .* 14. v : A I.

Because gasoline lead levels fall over time in both our base case and the low-lead case, the difference in blood lead levels resulting from the proposed rule will change over time.

I enclose a brief memorandum on the lethal dose of lead for cattle.

Take a basic item like a sheet of lead.

I am especially sensitive to the implications of acute infectious disease as means of exacerbating episodes of lead intoxication.