A topographic engineer examines an open pit diamond mine in Republic of Sakha (Yakutia), Russia, on Nov. 13, 2018. Alrosa, the world's leading diamond miner, has operations in Republic of Sakha (Yakutia) and Arkhangelsk region, running 11 kimberlite pipes and 16 alluvial deposits in the harsh climate of the Russian Far North. (Xinhua/Evgeny Sinitsyn)
In pics: world's leading diamond miner -- Alrosa
Source: Xinhua| 2018-11-15 19:44:35|Editor: xuxin
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