All waste, except process-based waste, generated at Talvivaara, such as hazardous, mixed, and other municipal waste; metal scrap and energy waste, is delivered to waste treatment facilities for recycling and recovery. Talvivaara's waste management partners are well-known and reliable national operators.
The most important waste produced by Talvivaara's mining operations is a precipitate containing gypsum and iron, which is deposited in tight gypsum ponds. The operations of the mine also produce waste rock, which is separated at the open pit from the actual ore suitable for processing. By using the waste rock efficiently, the company can reduce the amount of waste produced and avoid the construction of designated waste dumps. All waste rock extracted at Talvivaara is used in the construction of the base structures in the secondary heap area.