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    "localId": "75718643",
    "label": "Minutes, September 18, 1921",
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    "id": "75718643",
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    "contentType": "document",
    "title": "Minutes, September 18, 1921",
    "citationUrl": "https://catalog.archives.gov/id/75718643",
    "collections": [
        "Safety Light Collection",
        "Records Related to Radium Dial Painters"
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    "seq": 6,
    "pageIndex": 0,
    "type": "document",
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    "ocrText": "ROUGH COPY\nRECEIVED SEP\nMeeting was called at 8:30 P.M. at the Application Plant,\nthe following members of our organization being presention\nDr. Sochocky,\nMessrs: Strobl,\nMessrs: Roeder,\nH.B. Veidt,\nDimick,\nH.A.Veidt,\nUNITED STATES\nDowns,\nPoth,\nRADJUM CORP.\nSullivan,\nCreen,\nStrong,\nHarold Day,\nMayes\nBartman,\nHamlin\nMiss Smith,\nDr. Sochocky expressed a desire that the salesmen should\nbe 100% informed as to the plant methods and operations\nof the factories, in order that they can carry the message\nintelligently to our stomers. Salesmen must be interested\nin technical developments in order to interest customers,\nand to persuade customers intelligently that the quality\nof UNDARK is superior to other luminous materials. All\nplant departments must operate effectively, for if one\ndoes not the result of the whole operation is upset.\nMen in the plant depend upon the salesmen to bring to them\nideas and messages of the trade. Buyers are particularly\ninterested in the facts of development in any line, if\nthey are buying. This interest offers an opportunity\nto convince them of the superior quality of UNDARK.\nThe plant is equipped with specialists well trained, who\ndesire to give the sales department full benefit of their\nknowledge in technical experience.\nMr. Bilstein read a paper on manufacturing, beginning\nwith zinc sulphide, sun's action on zinc sulphide.\nZinc sulphide is excited by sun rays. Radium needs no\nsource of light, but if it excites zinc sulphide there\n-2-\nmust be other sources of power. The effect of radium\nupon zinc sulphide is not a chemical, but a physical\naction. - Zinc sulphide must be of exceptional purity to\ngive best results. Impurities offer great resistance.\nPurity of zinc sulphide is obtained by heating to a\nspecially high temperature, in order to be highly\nsensitive to the effect of radium. An excellent\ntest for zinc sulphide is the action of red light\nupon it. Two samples of zinc sulphide exposed to the\nsun will show equal luminosity, whereas one may be\nentirely inferior to the other when exposed to red light.\nOur material is as good one year after the influence of\nradium, as at the time it is charged.\nDr. Sochocky makes further general comments on zinc\nsulphide, pointing out methods, necessity and facts about\nzinc sulphide in order to meet arguments about comparative\nluminosity. The more radium it is necessary to use to\nexcite zinc sulphide the more, the more rapidly its purity\ndecomposes. UNDARK has clearly a longer life in its luminosity\nthan any other luminous material manufactured. As far as\nmanufacturing is concerned this Company is absolutely up-to-\ndate in this industry. - Constant improved product has been\nput out constantly with no announcement of the fact to the\ntrade. - The moment crystals of zinc sulphide are crushed\nthe luminosity is gone. (?)\nDr. Sochocky explained the actions of luminosity, which are\ndemonstrated by curves on charts, explaining high degrees\nof luminosity at the start and quick drops.\n-3-\nWe must disregard the importance of Lasb mit luminosity, and\ngive the greatest attention to the steadiness and lasting\nqualities, and to interest customers in this.\nGovernment Bureau of Standards charts, as well as English\nInstitution charts, demonstrate quick flash and sharp drop\nof competitors' material.\nMaterial properly applied stands up considerably b better\nbetter than material improperly applied, because of the\nadhesive. hindhing humanity\ntw ff have no christ profertion t innoviousity\nMicrolamberts do not effect measuring luminosity.\nComparative rises and drops of charts much more effective.\nThe unit system can be converted into microlamberts,\nRapid increase in luminosity of lower grades during the\nlast few months with no injury to the lasting qualities.\nNewest \"K\" now equal to the old \"F\" of six months ago.\nChartA read readings, made in the dark such 20 that you cannot tell\nwhat the readings will be until they are exposed to the\nlight.\nSalesmen must be confident of our material themselves,\nin order to make customers believe in the material and\nin us.\nVery interesting test of the immediate effects of different\nlights upon UNDARK after compared with other materials, the\nluminosity of which dies rapidly under the red light whereas\nthe effect of all is the same under the white light. This\n-4-\ncan be demonstrated by salesmen to customers.\nAlso, demonstration of breaking down the lighting\nqualities of crystals when crushed, for instance in\nimproper application. The adhesive is oxidized\nby the effect of radium which causes the luminous\ndial to turn brown Pine pitch, which is light in\ncolor, turns brown when exposed for sometime to light.\nDr. Sochocky requests that salesmen remember all questions\nasked by customers. While nine out of ten questions\nmay be valueless, the tenth may be of service to the\nplant.\nlasts\nThe effects of polonium is only 140 days, but decays very\nvery rapidly. The effect of mesothorium will last longer\nthan polonium. Radium effects zinc by means of alpha rays.\nAlpha rays represents the greatest energy of radium, but\nit is not penetrating. The beta ray penetrates. Out of\n1000 alpha rays near the zinc only 100 penetrated.\nAdhesive which is most penetrable by alpha rays must be\nused.\nCharts will be furnished on all last material, showing\nexact comparisons in immediate luminosity and lasting\nqualities.\nRadio active material is calculated in half light.\nRadium dies in 1,700 yearys. Mesothorium is sufficient\nfor two year luminosity, beyond that radium is necessary\n-5-\nto guarantee satisfactory luminosity. Radio thorium\nis effective for one year. Polonium is effective for\n140 days.\nTests conducted by customers with the material obtained\nfrom Radium Dial and ourselves one year ago are not\ncomparable with results to be obtained by a test of the\ntwo materials conducted today, because of remarkable\nimprovements in UNDARK during that period. Customers\nmust be encouraged to test our material against Luma\nin reasonable production rather than by samples, which\nmay be specially prepared.\nGeneral discussion by salesmen of recent complaints and\nsuggestions by customers answered by Dr. Sochocky with\nvery satisfactory explanations and suggestions.\nCHD: : FML"
}