Word: copper
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Dates: during 1920-1929
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...lower limit to his activities. In 1922 he bought a ship, the Blakely, from the Shipping Board. He fitted her out for diving and salvaging, and laid in an equipment of patent diving suits of manganese bronze (which resists salt water corrosion), with flexible parts of interlocking copper tubing and ball bearing joints, with portable air equipment, carrying a four-hour supply of oxygen and a telephone...
During the winter of 1923 a visit was made to the west coast of Chile. There, two miles off Pichidangui, was located the wreck of the British schooner Cape Horn, which went down in 1869 with a cargo of copper, lying in 53 fathoms (318 ft.) of water. Captain Leavitt declares that in some of his searches he went down to 60 fathoms (360 ft.). When the wreck was discovered, a difficulty came up. At 53 fathoms it was almost pitch dark; there was not enough light to work...
...procured, incandescent vacuum lamps, with glass capable of resisting ten times; normal air pressure, made by the Westinghouse Lamp Co. With these, the expedition set out in the Blakely just a year ago. Work was begun in March. Last week, messages were received telling that $600,000 worth of copper had successfully been salvaged from the Cape Horn...
...Copper and Brass Research Association has completed a survey on the building shortage in this country, of general interests to tenants, landlords, mortgage-holders. On Jan. 2, 1920, the shortage amounted to $10,750,000,000; and each year an additional amount of construction valued at sums starting at $3,000,000,000 and steadily increasing was likewise required to meet the normal growth of the country...
Plant Sprays.. Copper hydroxide used as a spray is 15 times more effective as a fungicide than Bordeaux mixture commonly used on plants, and moreover leaves no stain. It may be the active ingredient of Bordeaux mixture.-Dr. Henry D. Hooker, University of Missouri...