The Food and Drug Administration considers compounds of selenium, cadmium, lead, barium, boron, antimony, and mer cury too toxic for use where food contact is concerned.

Our practice in the Detroit Laboratories of Ethyl Corporation is to assume that every one of these compounds behaves like tetraethyl lead until we have proved that this is ' ot the case.

Avy*s d at a on lead in th e P a r is atmosphere h as served as th e golden t r o car and h as obtain ed th e d esir ed respon se.

I, August 33, 1954 C-35U Lead IotojtrlM Asaodatlc* U20 Lexington Iwu Raw Torfc 17, R.

than that caused by the inhelntion of purs quarts. ' This evidence leads us to believe thut In industrial practice tho minimal allow able concentration of Saylo could bo far in oxcc3S than that accepted for quart* before ileylo would havo en adverse ctisru-- lilting effect upon s tuberculous-infection in.espcnod onployros.

Litfcupone, Tltaaolttfc, Black dsh Hammond - Pcwdared Metals Scranton - tbits lead Regular sales are not intermixed; thus, 8t.

ACCESSORIES Dehydrators, oil separators, strainers, vibration eliminators, sight glasses, and various types of valves are accessories frequently needed for the proper Refrigeration 857 in water lines:'leading to water cooleid condensers.* : Sight glasses which permit visual inspection of the condition of the refrigerant are sometimes installed on factory assembled commercial unit systems.: Tti is particularly advisable to place such a fitting before the expansion valve, if the evaporator is located above the condenser. . !

., purchaser of the Chemicals-Pigments-Metals Division's Scranton, Pennsylvania plant and lead pigment business as authorized by the Committee March 3> 1958* One of the principal objectives of negotiations with the Trustee's attorneys, he said, was a mutual agreement whereby real estate in Scranton subject to the Company's purchase money mortgage might be sold, with expectation of receiving payment of the proceeds of such sale and establishment of a claim as a general creditor for the balance of indebtedness due under the defaulted purchase agree ment.

I, August 33, 1954 C-35U Lead IotojtrlM Asaodatlc* U20 Lexington Iwu Raw Torfc 17, R.

Kaylo duet an inhalation by experimental **m*i doe* not produce silicosis Irrespective of the small amount of quarts present* It does produce the asboatotle type of re action in the lungs and, therefore, ve believe every precaution should be taken to minimise exposure of industrial employees* Caylo dost on inhalation by experimental ***1 in fected with tubercle bacilli (& ) produces only a very stimulation of the tuberculous infection, much less than that caused by the inhalation of pure quarts* Thia evidence leads us to believe that in industrial practice the minimal allow able concentration of Kaylo could be far in excess than that accepted for quarts before Xaylo mould have an edvarse stimu lating effect upon a tuberculous Infection in exposed employees* This evidence mould support the view that inhalation of Xaylo dust mould not be hasardous from the standpoint of tuberculosis, especially provided that the dust hasard is controlled^ as cited sbove* Ve are Socking forward to having you and Doctor Shook vlth us the latter part of June* Sincerely yours UYstv Arthur J* fervald, K*D* Director

' sion of the anterior pituitary adrenocorticotropic mechanism to disappear gradually and leads to increasing amounts of endogenous corticotropin production, stimula tion of the patient's adrenal cortices and eventually restoration of the pituitary adrenocortical system to normal.

Lead shields or other accessories for the radium applicator or modifications in its construction might reduce the dose delivered to the physician's finger tips and thereby permit a larger number of treatments.

Scranton Plant - The Scranton properties of the Fuston lead Division were trans ferred on June 9 to Dumcmt-Airplane A Marine Instruments, Inc.

Baumgartner, Commissioner of Health of New York City, relative to the letter I wrote her on September 23 last about the possibility of the New York City Board of Health approving the text of the Baltimore City ordinance requirement for the labeling of lead paint as an amendment to their Regulation 230d in their Sanitary Code, so that the Baltimore wording could be used to meet the New York City requirements and obviate the necessity of separate labeling for our two cities.

Cleveland, Ohio May 12, 1955 Kettering Laboratory College of Medicine Eden Avenue Cincinnati 9> Ohio Gentlemen: Please send as soon as possible eight sterile containers for lead urine specimen to McGean Chemical, 2910 Harvard Avenue, Cleveland, Ohio* <*** Yours truly, Q /J R.