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{
    "localId": "75720556",
    "label": "Report to [A. Roeder], January 28, 1926",
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{
    "id": "75720556",
    "sourceUrl": "https://catalog.archives.gov/id/75720556",
    "contentType": "document",
    "title": "Report to [A. Roeder], January 28, 1926",
    "citationUrl": "https://catalog.archives.gov/id/75720556",
    "collections": [
        "Safety Light Collection",
        "Records Related to Radium Dial Painters"
    ],
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{
    "seq": 9,
    "pageIndex": 0,
    "type": "photo",
    "url": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/SLC/Radium/SLC_0000695_Page_09.jpg",
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    "ocrText": "9.\nThe tests were made by alphs ray comparisom which is considered vory sensitive for\nthe detection of radio-setive naterial. Pigs B and it show no radio- active material\nPiga e and D give a. slight indication of its presence, the the time required for a de-\nfimite drop in potential is so small 3.2 to raise the question of experinental error.\nPig A shows a defimite smount of radio-active material even if minute in quantity.\nThat there is a retention of radium-thorium material for como time efter the ex-\nposure is indicated by su examination of the tissues of several persone who have worked\nwith the material. It ie estimated that in the osse M who had worked im the industyy\nthe\nto withim several northe of her death that her bores contained .200 mgu of radium aquivg\nlent\nalent. The tiasues or s. man who had been eagaged in weighing and handling the concon-\nmth am\nthe\ntrated material and his exposure many times greater the the oase M. Horover he\nmin at annual\ndid not have much exposure during the last, year of his life. It is estimated that his\ntirsues costaimed .048 nga at tha time of his danth.\nlung\nWe now made an examination of persoas who had been employed or wero still\n1\"\nployed in redium work. Theae persona ware instructed to take a vory through bath the\nlight before the tast and to report at my offico dressed in clothes that had never\nbeen wora in the factory or laboratory. A person who had nover workod in radium was\nmar\nused AS a control. From time to time a known quantity of radium were placed under the\nperaon being examined and readings taken. In° person being examixed vas requented to\nlie flat on the back in z. comfortable position and the electracope placed directly\nover the chest axd readings taken as described. The results given bolow are given\nin the number of divisions the quartz fibre will nove in one second.\nB At present painting dials.\n0026I dèv.\nL 2\n\"\nn\nn\n,00266 N\nF. Comtrol\n,00267\n2nd Day.\nS Has not worked ix plant for siz months\n.\n00849\nF"
}