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, a transition has been made to the second stage of development – extraction of the remaining ore pillars. The deposit is represented by a stratiform body with variable thickness and dip angle; the depth of occurrence is up to 400 m (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 Pechenganikel Combine, experimental work was carried out on the development of an inter‑chamber pillar located between the walls of 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 host rocks – phyllites – are partially broken by transverse fractures. In general, the ore and rock are stable. The strength coefficient of the ore is 8‑12, of the rock – 10‑12. Bulk density of the ore is 3.2 t/m³, of the backfill material – 2.8 t/m³.