Word: coppered
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...Arizona, 45 miles from Tucson, lies the nation's biggest untapped source of copper. It is the 4,411-acre San Manuel field, which geologists estimate contains 460 million tons of ore-enough to last the U.S. for about three years. But it has not been exploited because the low-grade ore would be enormously expensive to mine and process...
Last week RFC Boss W. Stuart Symington hinted that the Government may lend $75 million to put San Manuel to work to help ease the copper shortage. The loan was requested by little Magma Copper Co., sixth on the list of U.S. copper producers and owner of the San Manuel property. If the loan goes through, as RFC officials expect, Magma's San Manuel production should hit 70,000 tons in the next four years, increasing U.S. copper output by 6%. That would push Magma's total output up to 100,000 tons a year,make the company...
...prints started as paintings, which were photoengraved on copper plates. Rouault reworked each plate with engraving tools, giving them a depth and richness of black-to-white values that rival even the color values of his paintings...
Extracting copper from such low-grade ore is enormously expensive. To open his Nevada mine, "Con" Kelley had to buy a sulphur mine 60 miles away, to get sulphuric acid needed for the concentrating process. Because exploration is even more expensive, Kelley and others are now going through old diggings to get out the high-cost ore that had been bypassed. Anaconda alone is spending $27 million to tap 130 million tons of such ore in its famed Butte, Mont, properties and another $100 million to process low-grade ore in Chile...
There is no quick way to boost copper imports, either. The U.S. last May shelved its 2?-a-lb. tariff, and agreed to pay a premium price of 27½? for Chilean copper, which accounts for most U.S. imports. But the U.S. also had to agree to let Chile sell a big chunk of her copper in Europe and elsewhere, where the price has been as high as 50? a Ib. Result: imports have dropped...