Word: vein
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Dates: during 1930-1939
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...passed a vertical depth of 5,000 ft. Such lean ore had never before been mined so far down. In open-pit mining, which means simply shoveling away a hill of exposed ore (as at Bingham, Utah), lodes down to 8/10 of 1% can be handled profitably. Deep-vein mining entails the cost of tunneling, drilling, blasting, hoisting, ventilating. Mining engineers consider Mr. MacNaughton's achievement remarkable because his deep ore was only slightly higher than the lowest grade of surface ore mined anywhere in the U. S. Mr. MacNaughton had no great scientific tricks up his sleeve. Faced...
...Conglomerate Mine is the only one now operated by C. & H., and in two or three years it too will be abandoned because the vein is running out. However, the company has other lodes which can be worked if copper prices improve...
Calumet & Hecla history goes back to a day before the Civil War when a surveyor named Edwin James Hulbert found a rich vein of copper lode called "conglomerate" because the ore was a cemented mass of pebbles containing pure copper. Hulbert recalled that Boston's famed Naturalist Jean Louis Rodolphe Agassiz had visited the district, showed interest in scattered pieces of conglomerate. Hulbert hastened to Boston, enlisted such glittering names-Higginson, Hunnewell, Livermore, Agassiz, Quincy Adams Shaw, Horatio Bigelow-that his venture became known as the copper company with a Harvard accent. The first shaft was sunk...
Unmoved by Dickens' crocodile tears, Biographer Kingsmill applauds his comic vein to the echo, calls The Pickwick Papers "his greatest book and the finest example of comic impressionism in our literature." He sniffs at Dickens' "Bravery" in championing social reforms, says his dragons were papier-mâché bugaboos: "He was one of those reformers who attack with public opinion behind them, and are rewarded with an increase in their wealth and popularity. He was not one of those reformers . . . who run counter to public opinion and are put in prison and ruined." Kingsmill states his whole...
...reluctantly releases its carbon to combine with the nitrate's oxygen. Once detonated, however, nitramon explodes with 40% more force than TNT. It costs less than some grades of dynamite. The company claims that it is impervious to cold, works under water, should make quarry blasting and coal vein stripping completely safe up to the moment of "shooting." Politically timely was the assurance that nitramon's value is strictly limited to peacetime...