The story of Pittsburgh: Radium

Bibliographic data

Multivolume work

Identifikator:: 1831622599

Document type:: Multivolume work

Title:: The story of Pittsburgh

Place of publication:: Pittsburgh

Publisher:: First National Bank

Year of publication:: 1919-1930

Collection:: Economics Books

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Volume

Identifikator:: 1831623226

URN:: urn:nbn:de:zbw-retromon-239786

Document type:: Volume

Title:: Radium

Volume count:: Vol. 1, nr. 7

Place of publication:: Pittsburgh

Publisher:: First National Bank

Year of publication:: 1921

Scope:: [ca. 18] Seiten

Digitisation:: 2022

Collection:: Economics Books

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Chapter

Document type:: Multivolume work

Structure type:: Chapter

Title:: Radium

Collection:: Economics Books

cancer, giving in some cases more satisfactory results than any other method. Because of this increasing demand for Radium on the part of the medical profession of this country and of the world, James C. Gray, the President and General Counsel of the Company, is determined not only that the Standard Chemical Company maintain its record as the greatest producer of Radium in the world, but to have it make available for the medical profession of the world an even greater quantity of the highest purity Radium. Of the total available supply of Radium in the world, estimated to be about 140 grams, the Standard Chemical Company has produced, to April 1st of this year, 71.8 grams. Of the total of 18.5 grams of high purity Radium pro- duced by the Standard Chemical Company during 1920, Mr. Gray permitted only about one-eighteenth, or 1.2 grams, to be used for what may be said to be commercial purposes, i. e., luminous dials for Army and Navy Instru- ments of precision needed for night operations, and for watch and clock dials. It is in the form of Radium Luminous Compound more popularly called Paint, that Radium is used in the indus- ‘rial world. How such an expensive material as Radium may be used on the dials of comparatively inexpensive watches, has always been a point of interest to the general public. Radium is used for this work, each watch dial containing a minute portion of real Radium, and the reason why this may be and is so, explains some of the wonder of Radium, and makes it easier for the average reader to understand how and why Radium in larger quantities is effective when brought into contact with diseased tissue when used by ‘he medical profession. The luminous material seen on watch and clock dials is a combination of a most minute portion of real radium and a specially prepared zinc sulphide. If one of these dials be examined by a good reading glass, in the dark, after the eyes of the examiner have been in darkness for about five minutes, the luminous material will be seen to

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