Stary Oskol
Over 40% of known iron ore reserves of Russia are concentrated in the oblast. Deposits are confined to the Kursk Magnetic Anomaly area. Among them are Korobkovsky, Lebedinskoye, Stoylenskoye, and prospective Prioskolskoye iron ore deposits in Stary Oskol District, Bolshetroitskoye in Shebekinsky District, as well as Yakovlevskoye and Pogremetskoye fields.