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Information × Registration Number 0309U004080, 0107U000384 , R & D reports Title Economic efficiency of entry drifting by wide face popup.stage_title Економічна ефективність проведення виїмкових штреків широким вибоєм Head Pavel Ponomarenko, Registration Date 11-02-2009 Organization National Mining University popup.description2 Necessity placing breeds is grounded from efficiency entry drifting in mined-out space. Factors and their varying are grounded at the economic-mathematical design of financial viability of leadthrough of making a wide backwall. Economical and mathematical model efficiency entry drifting making with placing breed is described in gateside mined-out space. Results design are resulted5635 Product Description popup.authors popup.nrat_date 2020-04-02 Close