SIL V E R T HE element silver sometimes occurs as a free metal, but is obtained mainly from the ores of lead, copper, zinc and gold: A lustrous and beautiful metal, silver has been used for ornament and exchange since the earliest days of history. At Ur of the Chaldees trinkets of silver have been found in royal tombs built more than 5,000 years ag0; and the Old Testament relates how Abraham weighed out silver to buy a burial place for his wife Sarah. Silver has been mined in Peru since the time of the Incas but the main sources today are Mexico, the U.SA. and Canada: Silver is well known in coinage and in such forms as Sterling Silver; and electroplated nickel-silver (E PN.S. ) but it also has important industrial uses. The best electrical conductor known; it is used extensively to make electrical contacts, and plant for the manufacture of certain chemicals is sometimes lined with silver because of its resisz- ance to corrosion. The important light-sensitive compounds silver bromide and silver chloride-are the basis of all photo- graphy. ICI: makes the sodium cyanide used in one method of silver extraction. LC.I. also uses silver gauze and granulated silver as catalysts in the production of formaldehyde one of the basic raw materials of the plastics industry. ICI IMPERIAL CHEMICAL INDUSTRIES (NZ) LTD:
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https://paperspast.natlib.govt.nz/periodicals/NZLIST19530904.2.34.1
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New Zealand Listener, Volume 29, Issue 738, 4 September 1953, Page 16
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224Page 16 Advertisement 1 New Zealand Listener, Volume 29, Issue 738, 4 September 1953, Page 16
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Copyright in the work University Entrance by Janet Frame (credited as J.F., 22 March 1946, page 18), is owned by the Janet Frame Literary Trust. The National Library has been granted permission to digitise this article and make it available online as part of this digitised version of the New Zealand Listener. You can search, browse, and print this article for research and personal study only. Permission must be obtained from the Janet Frame Literary Trust for any other use.
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