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Show Aluminum is more and mpre becoming becom-ing a rival of copper for electrical purposes. pur-poses. Thus, the Engineering and Mining Min-ing Journal says: "Aluminum as a conductor con-ductor of electricity for lighting and power transmission is gaining favor. In one year over 800,000 pounds of aluminum representing nearly 500 miles of wire, -was purchased by two prominent promi-nent electrical companies in New England. Eng-land. Similar large orders have been placed by other large affiliated concerns. con-cerns. The weight of aluminum as rolled compared with copper is as 1C2 to 553 pounds per cubic foot and the cost is as three to one." And yet It is but a few years back to the time when aluminum was worth as much per pound as silver is now, and was altogether alto-gether beyond the thought of any one for ordinary mechanical purposes, so scarce and dear it was. The world is surely getting on. ' |