Dear S ir: The p o s s ib le p u b lic h e a lt h and i n d u s t r i a l h a z a rd s in th e manu f a c t u r i n g o f t e t r a e th y l le a d compound and in th e d i s t r i b u t i o n and u se of t e t r a e th y l lead gasoline has been under co n sid eratio n by th e Public H e a lth S ervice f o r a number of m onths.

Underdrains leading to points of free discharge are placed in the gravel or crushed rock beds.

Aerofin is therefore a proved product approved by leading engineers everywhere.

Traps (preferably high-pressure thermostatic) are placed on each coil or unit, and the condensation is trapped into a return main, which is itself vented, and leads by gravity to a vented receiving tank or feed water heater.

By way of background, smelters purchase concentrates under contracts which typically read (for lead) as follows: "pay for ninety percent of the contained metal at Metals Week average price minus $X per ton treatment cost."

MANAGEMENT Glidden goes for less width but more depth During the regime of the late Adrian Joyce, its diversification was often unprofitably indiscriminate.

I remember before the inspeotion that Z was passing when I saw Smyth and Mooeman talking and Z heard Moosaan say to Smyth, "If you were using a lead and oil, as X am, you would get the effect required*'" After Devine made the mixtures, X examined them and know that the mixtures were made in five gallon cans, and afterwards X poured them into a working pot and carried, the four pots into Building A and set them alongside of where tie men were working and instructed the men that in case the insjwtor came over they should give him the paint out of thdt bucket instead of out of the basket they were working out a^. this was done in accordance with Moosman`8 instruction, Moosman being there all day from morning till evening.

SECTION II HAZARDOUS COMPONENTS OF MIXTURES THRESHOLD COMPONENT %, LIMIT VALUE 3 CARBON BLACK (0-0.6%) - 3.5 mg/nu LEAD COMPOUNDS (0-4%) - 0.2 mg/nu MINERAL OIL (0-0.5%) - 5 mg/m - TIN ORGANIC COMPOUND (0-2%) - 0.1,mg/ra TITANIUM DIOXIDE (0-1%) - 15 mg/nT COMPONENT THRESHOLC s LIMIT 4.

.It Is certainly worthy of thought lat In -this American nation, in -this en- re land, including Canada, - all conven- ons throughout the country today, rep- jsentlng. the leading industries of the sutitry, having such mottoes as you have ere, are recognizing at the beginning of ielt` service the place of Almighty God, nd it is gratifying to recognize that the plrit In these nations is identified with ie Omnipotent. .

N.

--I----.-<--13.3 Wagon Makers' Sfcdha Lead --v------ *..t4* Wat' FtinslturefPaste)--------i'L. l"lli*.ll:ll --U4.IIL-.14; ,,,.

DEALERS IX PAINTS OILS GLASS MANUFACTURERS OF Pioneer White Lead, Mixed Paints, Varnishes, Mirrors, Etc, 301 Mis s io n St r e e t SAN FRANCISCO, - - CALIF.

Synthetic materials in stole, between Ihe phases and in lead protection, are doing an all-around better Job.

by John Noble and Harry Rothman In September last year the corpses of over 8,000 sea birds were washed up on our coasts from.Northern Irclund, Ayrshire, Oimlivrl.iikI, luHiensliirc to North Wales.

by John Noble end Horry Rothman la September lost year the corpses of over 8,000 sea birds were washed up on our coasts from Northern Ireland, Ayrshire, CtimlH'rl.iml, I -uiicuslilrc to Nm tli WuU-s.