Number | Name | Date | Kind |
---|---|---|---|
2842436 | Dasher et al. | Jul 1958 | |
3761566 | Michal | Sep 1973 |
Entry |
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Queneau, Editor, Extractive Metallurgy of Copper, Nickel, Cobalt Interscience, New York, (1961), pp. 363-397. |
Boldt et al., The Winning of Nickel, Longmans Canada Ltd., (1967), pp. 290-294, 388, 437-444. |