The Russian mining giant Nornickel reported Sunday a discharge of wastewater in one of the factories of ore enrichment in the Arctic, one month after a pollution free previous to hydrocarbons in the same region.

According to a press release published on the website of Nornickel, the incident regarding the plant enrichissment of Talnakh, located near the arctic city of Norilsk. Wastewater, used for the treatment of ore mined from the region, have "overflowed from a tank" Sunday and dumped in the nature, according to the company.