Document 8Rg0mXp5knOzanYVQmBd8Mokd

August 13, 1946 `.It . Hugh H. Stewart 40 Rich Avenue loifflt Vernon, .Jew York Dear ?ir. Stewarts this is in. reply to your letter of August 10 to Dr. Calingaert, regarding the use of leaded gasoline in camp stores If the store is operated under conditions of good ventilation, and if there is no direct contact of' the gases above the flam with food, there should he no serious hazard from lead Junes. However, any food heated in the open over the flame nay become contaminated filters hare been devised which, for a certain length of time, ronore most of the lead from the fuel. be have not yet tested the efficiency and endurance of the filter on any of the commercially available stores for all-around safety, we suggest the use of keroseneburning equipment only. Very truly yours. Harold A. Beatty Assistant Director of Chemical Research 0009570