The company constantly purchases on a tender basis: diesel fuel — from 7 t per month; diamond wire, diam. 11.4 mm — from 100 linear metres per month; drill bits diam. 36 mm, 40 mm, 95 mm and rods 2.4 m, 3 m, 4 m and 5.6 m; pneumatic perforators Y-19, 24, 28.