Estimated cost of construction of a new underground mine at Mir diamond deposit in Yakutia will be about ₽120 billion in today's prices, told RBC SEO of Alrosa Sergey Ivanov on sidelines of Eastern Economic Forum. "This is a very capital-intensive construction: the investment horizon is more than ten years, only 5-7 years will have to build the shafts," noted top manager. Production at field can be resumed in 2030s.