Word: copper
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Dates: during 1920-1929
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...bringing a small container filled with crude oil into contact with the silken thread. The principle that would cause the indication of the presence of oil in the ground, he explained, was the natural one that "like attracts like." Furthermore, the machine would indicate other buried minerals?copper, gold, coal, iron?if properly "primed...
Transportation facilities are rapidly being created in the "Dark Continent." The Cape-to-Cairo route of about 5,000 miles by rail and water lacks only 300 miles of railway line. Also, the Benguella railway line from the Katanga copper fields to the African west coast is largely completed, and the unfinished portion is being steadily lessened. Altogether there are 23,000 miles of existing railway mileage in Africa, which provide freight as well as passenger facilities. More and more African railways are used for commerce; in the beginning they were patronized mainly by travelers...
Already there are large amounts of U. S. capital invested in Africa, principally in the Katanga copper mines and the new Congo diamond fields. Yet for several years the shares of the Rand gold mines and the De Beers diamond mines have been listed in the New York Stock Exchange...
...some months the "statistical position" of copper has been improving. Yet this has happened before, and business refused to become excited over it. Only lately have copper prices begun to reflect increased demand and decreased stocks...
...family," said Daniel Guggen- heim, famed copper man, in sending a $500,000 check, last week, to New York University for the foundation of a College of Aeronautics,* "has long been identified with exploration beneath the earth. We have tried to assist in developments which would make mining more safe as well as more profitable and therefore of the greatest economic value. I have learned through my son, Harry F. Guggenheim, who was one of the first civilians to enter aviation and was a naval aviator overseas during the World War, of the plans of New York University to establish...