The first known case of soil reclamation took place in the XVIII century. Back then, by order of King Frederick of Saxony, the dumps of old mines were planted with alder.
In the North, nobody wanted to engage in systemic reclamation until the 2000s, as it is difficult, time-consuming and expensive. Reformation of the fertile topsoil takes decades. The Far North needs plants able to adapt to the extreme conditions. The weather also makes its adjustments.
Experts in the Clean Norilsk program have pioneered the reclamation process with reliance on scientific approaches. Work is organized in 3 stages:
- preparation: design and detailed design development;
- technical arrangements: soil preparation (battering, topsoil replacement, construction of hydraulic structures);
- biological arrangements: fertilization, sowing and planting.
Soils in the Arctic are heterogeneous, split into permafrost zones, and the weather is unpredictable. If the timing is wrong, special-purpose machinery will get stuck and break down leading to a waste of time and effort.
Therefore, the work requires thorough studies and planning. If necessary, the reclamation project is redesigned and timing is changed.
Land restoration under the Clean Norilsk program covers all cleared sites. By the end of 2023, 78.8 hectares of land have been reclaimed.