![]() ALROSA’s subsidiary JSC Nizhne-Lenskoye also prepared a report with the calculation of reserves for the site Billyakh-pritoki-3. Prospecting and evaluation operations were also carried out and completed by ALROSA’s subsidiary, JSC Almazy Anabara at the sites of Khara-Masskaya Ploshchad and Malaya Kuonamka, as well as exploration on Lyaseger-Yuryakh and Ochuos subsoil plots. The increase in the reserves recorded in the year 2017 is attributed to the prospecting and evaluation of deeper levels of two kimberlite pipes, the Internatsionalnaya pipe at a depth interval of 1,190-1,650 meters and the Yubileynaya pipe at a depth of 680 meters, as well as the completion of evaluation for the third stage of the buried Nyurbinskaya placer. ![]() VIEW OF THE INTERNATSIONALNAYA UNDERGROUND MINE In southern areas of Western Yakutia, ALROSA geologists conducted the search for diamondiferous kimberlites, while prospecting and evaluation works were carried out on Syuldyukarskaya pipe and on alluvial deposits in Srednemarkhinsky and Malobotuobinsky areas. Prospecting operations in Russia were concentrated mainly on eight promising areas, out of which seven are located in Yakutia. In the year 2017, ALROSA’s prospecting activities were focused on two main regions, the territory of the Republic of Sakha (Yakutia), in the Arkhangelsk region of Russia and the Cuango River alluvial diamond concession in Angola. KARPINSKY (LEFT) AND ARKHANGELSK (RIGHT) OPEN PIT MINES AT YAKUTIA
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