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SA FETY COMMITTEE O, B .
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Copy t o D r .
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c 0 P Y Chicago, Illinois July 15, 19*40 Mr. 0. 3.
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March 2, 1937 Mr.
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A sample of molding sand from the American Crucible Products Company, Lorain, Ohio, was submitted for examination.
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March 12, 1929 Dr.
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September 16, 1930 Mr.
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June 29# 1933 Dr W.
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yA' ' ' -''1'"-,-j > V; v , Vj^._;' ' -,^e !
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Telephone MB 1965 368 C0LLIN3 STREET - MELBOURNE Cl Our Ref 14/F Your Ref ST/3/112 23rd July, 1947.
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December 20, 1371 Miss Marjorie W.
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Maroh 4 , 1D4 V4r.
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December 9 19*& Hr.
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Horesbor I t , 19W* Mr.
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UNIVERSITY OF MICHIGAN SCHOOL OF PUBLIC HEALTH ANN ARBOR.
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