Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 214
188 ASSOCIATION OF ENGINEERING SOCIETIES. the total of the world's production at that time, the present position of the United States is clearly emphasized. The impression has been general that we had to look to Europe for our radium; that we did not know how to make it in this country; that the… … Showing- Different Stages of Mining-. chemists had placed America in a humiliating position. It is, however, no longer necessary to depend on a foreign sup- ply. We are to-day making radium in our own plants in com- paratively large quantities. In connection with the radium in our ores there arc…
Engineering
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
