Section 42(3) in Minerals (Other than Atomic and Hydro Carbons Energy Minerals) Concession Rules, 2016
(3)The average sale price of any mineral grade/concentrate in respect of a month shall be the weighted average of the ex-mine prices of the non-captive mines, computed in accordance with the above provisions, the weight being the quantity dispatched from the mining lease area of mineral grade / concentrate relevant to each ex-mine price.
