Iridium
Sir,—The repeated implications in the last few days that iridium is a dangerous substance are misleading. Iridium is no more dangerous than gold or iron or firewood, The material that leaked radioactivity was presumably a radioactive isotope of iridium, and not naturally occurring. Isotopes of many other elements, such as platinum or aluminium or carbon, can also be dangerously radioactive, but that does not mean that platinum, aluminium or carbon are themselves dangerous substances. — Yours, etc., DAVID SMALE. August 10, 1984.
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Press, 15 August 1984, Page 18
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82Iridium Press, 15 August 1984, Page 18
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