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    "localId": "75723418",
    "label": "Report, November , 1928",
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    "title": "Report, November , 1928",
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        "Safety Light Collection",
        "Records Related to Radium Dial Painters"
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    "seq": 1,
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    "url": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/SLC/Radium/SLC_0001530_Page_01.jpg",
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    "ocrText": "TESTS FOR RADIOACTIVITY IN MISS GRACE FREYER; MRS. HUSSMAN, MRS. LARICE,\nMRS. MCDONALD, MISS SCHAUB\nFORMER EMPLOYEES OF THE\nUNITED STATES RADIUM CORPORATION\nThe object of the tests was to detect radioactivity radium, mesothorium) in the\npersons named in the title of this report. The tests were conducted jointly by Dr.\nG. Failla, Chief Physicist, Memorial Hospital, New York, and myself, in Rooms 801 and\n802, Hotel Marseilles, Broadway and 103rd Streets, New York, on Monday, Tuesday, and\nWednesday, November 19-21, 1928. Two members of the Commission named to study the\ncondition of the subjects were present at times during the progress of the tests.\nDr. Craber was present during the greater part of the day on Tuesday, and Dr. Ewing\nwitnessed the tests Tuesday afternoon and for a short time Wednesday afternoon. Dr.\nCraber also attended for several short periods on Wednesday.\nThe subjects had been tested previously for radioactivity in the office of Dr.\nMartland, City Hospital, Newark, New Jersey, Sunday, April 22, 1928, by Dr. Flinn and\nDr. Schlundt, and found to be inactive. It may be stated here in advance of experimen-\ntal data, that the recent tests conducted by Dr. Failla and Dr. Schlundt showed positive\nresults. Each of the subjects was found distinctly radioactive by both the gamma ray\nmethod and the expired air method of detecting radioactivity in living persons.\nThe\ntests conducted in April in Newark were confined to gamma ray measurements made with a\nWulf quartz fiber electroscope as modified by Hess. The same instrument was used in\nthe second series of tests conducted by Dr. Failla and myself. The tests on the ex-\npired air of subjects were carried out independently by two methods. Qualitative\ntests were made by Dr. Failla with a new type of testing apparatus for detecting feeble\nionization currents. The apparatus is a special type described by Dr. Failla. Both\nqualitative and quantitative determinations were made by Schlundt who employed a Lind\ntype\nof electrometer whose ionization chamber had a volume of about 3 liters (2700 cc).\nFor quantitative determination, the instrument had been calibrated beforehand by Mr.\nH. H. Barker. A drift of the leaf of one subdivision of the scale per second represents"
}