Yestyuninskaya mine of Vysokogorskiy ore mining and processing enterprise (part of Evraz Group) has recently assessed the productivity of the additional oil containment device installed at the water outfall: the device has already managed to reduce the oil content in the wastewater by 23%.

The system was installed in the fall of 2005 and is made up of a coke-filled iron box; due to its sponginess, the coke can absorb the oil. Using this device provides for higher quality decontamination of mine water; its effectiveness is normally assessed by means of taking and comparing two samples of wastewater, namely, before and after it gets into the device.