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Mining Engineering Opencast Mining Difficulty: Medium

R.M.R stands for

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Large ignious rockmass, differs from batholith, basin shape called Dipping connection in the are body joining two levels in metal mine. 20 m 3 /s of air flow through a long wall panel having 1000 tpd of production. Between the intake and return of the panel, the firedamp increases from 0 to 0.2%. The rate of firedamp emission is What is the expected range of LBC of a 2.5 m long, 15 cm diameter timber prop? The breathing bag capacity of BG 174 . . . . . . . . in litres.