Badran

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Badran is a mature underground gold mine operating since 1984. It is located in Oymyakonsky region of the Republic of Sakha (Yakutia).

The deposit is a gold bearing quartz veined and veinlet-disseminated zone hosted in a tectonical overthrust structure, along a strike length of over 5km, and down-dip to over 1,200m. High grade ore is located in a few ore shoots. Ore is mined by underground method; mining is continuous all year round. The mine incorporates 3 stoping mining methods: Room and Pillar, Longwall and Ice Fill.

The Badran processing facility, which also operates all year round, receives ore from the underground operations. The processing method consists principally of gravity recovery with cyanide treatment of the middlings streams. In addition, it also retreats gravity tailings from previously processed ore. The processing facility treats approximately 140,000 tpa in total.

Due to a recognition of the reserves additionally explored in 2013-16, the mine and the processing facility are currently undergoing reconstruction. This will increase the annual ore mining rate and gravity flotation circuit processing rate up to 200,000 tpa with total gold recovery 85.3 %, as well as gravity tailings processing up to 90,000 tpa.

Also, further exploration activities are carried out on the flanks and deep levels of the ore shoots involved in mining, and additional reserve increment is expected within this deposit.

Badran Key Facts

Location Republic of Sakha (Yakutia)
Resources (Russian classification, 2018) 504 766 oz
Reserves (Russian classification, 2018) 392 239 oz
Resource Grade 8,4 g/t
Reserve Grade 7,9 g/t
Au Recovery 80,5 %
Production (2017) 28 957 oz
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