कोयला मंत्रालय
In mining, OMS is one of the measures of efficiency for the production.
Details of OMS Calculation
(i) Calculation for UG OMS = Coal Production/ Manshift
(ii) Calculation for Open Cast OMS = {Coal production+(1.4*OBR)} / {Manshift+(Manshift*Average Stripping Ratio*1.4)}
Coal Production of UG + Coal Production of OC
(iii) Overall OM = ------------------------------------------------------------
Manshifts of UG + Adjusted Manshifts of OC
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