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THE WORLD’S CABLES.
There are at the present time about 225,000 miles of electric cables lying on the bottom of the sea. Each line has cost on the average about £2OO per mile to make and lay. About 6,000,0u0 messages are transmitted by cable every year. The working speed averages up to 100 words per minute. The average useful life of a submarine cable, under present conditions, may be anywhere from 30 to |_4o rcai-fi.
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https://paperspast.natlib.govt.nz/newspapers/PGAMA19070409.2.42
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Pelorus Guardian and Miners' Advocate., Volume 8, Issue 29, 9 April 1907, Page 7
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75THE WORLD’S CABLES. Pelorus Guardian and Miners' Advocate., Volume 8, Issue 29, 9 April 1907, Page 7
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