Document DB2ZQ7an9vqmvreK6daovybM

Sarch. 23*-' $3$ Hr. R. V. C* Bulkeley Asst. General Manager Gulf Refining Company Golf Building Pittsburgh# Pa* Ret- Scovlll Mg. Co. . Wafcerbury, Conn. Dear Mr. Bulkeloys Your letters of' February 25th and 27th addressed to Hr* 3* 0* faylor of the Ethyl Gasolene Corporation hm gone without reply since the matter as roforred to so at a tine when I was compelled to be absent from: my office for com weeks* 1 am sorry for the delay and 1 trust It will not have caused you undue inconvenience In as. crash as Milt much time has lapsed, and also I cl not .know whoa to address ' la your lies York' offlee# 1 am replying directly to you rfhc lead mnbmt of the- exhaust gas frees motors using leaded gasoils up to the -maximal cm,:'.arclal concentration is sot sufficient to give rise to the danger f lead poisoning In persona exposed to the exhaust gas, Safety hero is dependent upon two factors? (1) The concentration of flnbly divided lead particles i# act unduly h.l$b, and Sn this instance In which only .7 cc of lead per gallon of gasoline is used, the lead concentration would be quite smllf (2) exhaust gases are meh more dangerous from the point of view of carbon monoxide than they can, ever be from the point of view-of lead* I aa mot quit certain as to the carbon monoxl.de concentration # the exhaust gas from tractors but in tho case of automobiles, the carbon aonoxlde concentration is likely to be about five pereeqt and my be as high aa seven or eight percent, or even more under various conditions of operation* - If- the atmospheric conditions are maintained so as to be endurable to espoisqd parsons thou exhaust gas mat be diluted until the carbon,i&oao^td concentration is at least as small as .05 or .>4 percent. Concentrations of even this level are definitely unsafe for prolonged exposure so teat those ooneeiitra.tlons may not be permitted to. exist for more than: short periods of time .$tt a enclosed place* ad amount of Ventilation which will provide safety from carbon, monoxide exposure will obviate. apyf possibility of significant lead exposure* Thus, if tho building which you mention is ventilated slo as to be;:safe from tho point of view of carbon monoxide, you need have no four f the hasarda of load exposure* ** 2 Hr* 17* ?* C* Baikal? I think It till?,, b apparent to you that to procure 'the dilution of xhauafc gets which la s tlo .&"the atoad? 1 bb# -feoehanlea, 58S3 &. 1 trupt that the ahov ecsrionta will gltf you fcho information wh|l<sh you deetr and will liable you to reply to the roprsaobtatiyea of the Bcoytlla iianu*faetaring Coeipauy. You stay1 sowsi&er' yourself quit at liberty to make mo of an? statement vshich I have isad in thia letter in phrasing your replyf Cordially youra* IlAEtis ^eberiT '*1 K E 0015462