The Kaula copper-nickel deposit was developed in the upper part by open pit and in the lower part by underground mining with priority extraction of chamber reserves. Recently, the second stage of development - excavation of the remaining ore pillars - has been switched to. The deposit is represented by a stratum-shaped deposit with variable thickness and dip angle; the depth of occurrence is up to 400 meters (vertically). The strength of the ore is characterized by a coefficient of 8-12, and of the host rocks - 8-14 according to M. M. Protodyakonov.

In 1966 at the Kaula-Kotselvaara mine of the Pechanganickel Combine, experimental work was carried out on the development of an inter-chamber pillar located between the walls of the cement-reinforced backfill. Pilot works were carried out in a 6-8 m thick section of the ore body with a dip angle of 26-30°. The intervening rocks - phyllites - are partially broken by transverse fractures. In general, the ore and rock are stable. Ore strength coefficient is 8-12, rock strength coefficient is 10-12. Volume weight of the ore is 3.2 t/m³ and of the embedding material is 2.8 t/m³.