As the result of repeated over tolerance monitoring samples taken by H.I. Survey in Room 7 of 2228 Bldg., 200 East Area, an Industrial Hygiene study of the air contamination in this room has been made at the request of the H.I. Area Supervisor. Observations made during the preliminary survey and throughout the study indicate that the ventilation system together with the decontamination operations; slurping operation, Goldberg operation, and certain activities during bench determination of process examples, are the major contributors to contamination in the room. While it is felt that the major sources of contamination have been pointed out, there are many specific operations that have not been studies. Recommendations include: Replace the air supply grills with air diffusers, so that air will be supplied to the laboratory without drafts; Provide hoods over the decontamination sinks large enough to accommodate all manipulations involved in decontamination procedures and with sufficient exhaust ventilation that will maintain a minimum face velocity of 200fpm; Provide a hood over the slurper, larger enough to accommodate all manipulations, and ventilation to maintain a minimum of 200fpm at the hood face and any other openings; Provide an enclosure over the Goldberg such that positive exhaust ventilation …

Report presenting measurements of wing and fuselage pressure distributions made at low and high subsonic Mach numbers on a scale model of the projected X-3 research airplane. Tests were conducted in pitch and yaw and included measurements of the total pressure in the fuselage boundary layer at the location of the left boundary-layer bleed scoop.

The following report examines a rapid method used to eliminate the possibility of explosive perchlorate-organic mixtures in a control laboratory in order to determine radiocesium. These methods include the usage of chloroplatinic acid as a precipitate of radocesium.