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Cyanides/cyanates of sodium or pota ssium not only during centuries but over millenniums were used in methods for extraction the gold from ores, and further in refining of obtained golden m ud. In those processes the cy anides/cyanates still are not changeable. According to the huge amount of tr eated ore, it is expected that the amount of waste treated materials also be huge. We lding and brazing of golden parts frequently are obvious in usage for the purposes of gold jewel making. Therefore, it becomes reasonabl...