V.V. Lyukhanov, S.B. Alferov
The authors present the results of full-scale trials and operation of drilling equipment and tools manufactured by ZAO Mashinostroitelny Holding Company (Yekaterinburg) at mines of OAO Apatit, in Vietnam, and at mines of ZAO Zaporozhsky Zhelezorudny Kombinat in Ukraine, as well as at Novosmolinsky open pit in Chelyabinsk Oblast, and in conditions of operation of the Tonnelny Otryad No 12 Bamtonnelstroy.

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