Abstract
The commencement of pilot-scale production of high-purity osmium in 1965 increased to fifteen the number of elements recovered in marketable form from the Sudbury, Ontario, Ni−Cu ores. Detection of minute quantities of osmium in various plant intermediate products, development of a procedure for recovering and concentrating most of the osmium previously lost in processing, and the techniques for refining it into a metal powder of 99.98 pct purity, are described.
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