Kostomuksha mine
Mine in Republic of Karelia, Russia
64°43′N 30°30′E / 64.717°N 30.500°E / 64.717; 30.500The Kostomuksha mine is a large iron mine located in north-western Russia in the Republic of Karelia.[1] Kostomuksha represents one of the largest iron ore reserves in Russia and in the world having estimated reserves of 10 billion tonnes of ore grading 45% iron metal.[2]