Onika, D. G. (Dmitrii Grigorevich).

Excavation of mine openings / [by] D. Onika. - [Rev. ed.] / translated from the Russian by Victor Shiffer. [Rev. ed.] / translated from the Russian by Victor Shiffer. - Moscow : Mir Publishers, 1972.

Rev. translation of Provedenie gornykh vyrabotok. Rev. from the 1969 Russian ed.

Bibliography: p. [448]-449.

2.47rub

73150530 //r82

USSR72-9093


Shaft sinking.
Coal mines and mining.

TN283 / .O513 1972

622/.2