Word: copper
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Dates: during 1920-1929
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...That copper amalgam fillings, so often used in filling children's teeth, constitute the greatest source of danger, but silver and gold amalgams have also found their victims...
...Last week the Berlin correspondent of the American Medical Association Journal reported that these findings had led Dr. Stock to demand a ban on copper amalgam...
Ryan formed in 1912, owns 95% of the electric light and power resources of Montana; it sells current to Mr. Ryan's greater company, the Anaconda Copper Mining Co. (he is chairman) and its subsidiaries, including a 120-mile electrified railroad; and it has a 99-year contract to furnish power to the electrified portion of the St. Paul Railroad. Montana Power is one of the largest and most powerful concerns in the Northwest. Isolated it is worth a good many millions...
...great "potato" famine there, the belief current abroad was that the U. S. was paved with gold. The father found, of course, no gold covering the Michigan district where he eventually betook himself. But below the surface he found a metal far more useful to the industries of man-copper. He discovered the rich Baltic coppermine in the Lake Superior copper-district, and he managed the Hecla mine. The son, however, when he reached manhood, at first would have nothing to do with copper. He preferred to deal with another subsoil wealth-the oil that John D. Rockefeller...
...course, aided the company's growth. Although he sold copper to the Government at half its market value, the Great War demand and the elimination of costly selling-methods gave the corporation great profits. But they were only incidental to his War efforts. Incidental also was the construction of 30 miles of railroad in Wisconsin. The road cost $12,000,000 and carried the precious spruce, logged in Wisconsin, to the tracks of the Chicago, Milwaukee & St. Paul Railroad, which carried them to the airplane-factories which Mr. Ryan was supervising for the Government. That the 30 miles...