Word: copper
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Dates: during 1930-1939
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Greatest REA triumph was the ramshackle old cow barn with its dirt floor. To protect the 70 cows from flies there were electrically-charged copper screens. When a fly tried to get through the ½in. openings, there was a little flash, a ping -and the dead fly fell into a metal trough at the bottom of the window. Each cow had its individual drinking fountain, which spouted water when nuzzled. Cows were cooled by electric fans, clipped by electric razors, milked by electric machines. The hay they ate was hoisted into the trough by electric motors. The milk they...
...Surprisingly, the watermen had little or nothing to say about the growing practice of sterilizing reservoirs and swimming pools with silver. That ions (atomic fragments) of silver, copper and some other metals in extremely minute traces have a powerful germicidal effect was discovered in 1893. Only a few millionths of a gram per litre of water will kill germs. The silver which dissolves from a plate simply immersed in the water is enough. Thus treated is the water supply of Heidelberg, and there are many other installations in Germany, England, Switzerland. Two years ago the swimming pool of the Congressional...
Michigan College of Mining & Technology (Houghton, Mich.) President Louis Shattuck Cates of Phelps Dodge Corp ................D.E. President Earl Tappan Stannard of Kennecott Copper Corp...
Spreading its copper rumor down...
...exactly what had been done and that the amount involved was about ?4,000. I said to my son: 'Is that everything that you have done?' and he said yes. I asked him: 'Have you done anything for yourself?' My son replied: 'Not a copper, father...