Abstract
The northern parts of the Arctic Zone of the Sakha Republic (Yakutia) are the most industrialized regions of the Republic. Since the 1930s, there has been intensive mining of alluvial and primary tin and gold placers. The 60-70-year mining operation has accumulated huge mining residues in the region, leaving behind useful components owing to deficiencies in mining technology at the time and deviations from mining technology. These wastes are considered technogenic placer deposits. The study of these wastes has identified the following types of technological s: 1 – technogenic placers of tin and gold; 2 - technogenic combined placers of gold and kularit; 3 - technogenic placers of tailings ponds consisting of mining wastes of gold and tin ore placers.
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