Mechel PAO reported that the Group's Southern Kuzbass Coal Company is launching the second section of the longwall 3-1-11's working area at Sibirginskaya Underground Mine. Investment topped RUB 300 million. The longwall 3-1-11 lies 450 meters deep. The new extraction area's industrial coal reserves are estimated at 1.5 million tonnes. The working face's seam height is four meters, with the length of 220 meters and an extraction panel of 1,070 meters. The longwall's second section is equipped with a cutter-loader, an overloader, a crusher, a 220-meter belt conveyor, and a 130-section powered support system. All of the longwall's equipment is fully compliant with modern safety requirements.