Section 227(3) in The Coal Mines Regulations, 2017
(3)Air measurement stations shall be fixed at each split through which gas transportation pipe line passes in belowground working and air measurement at all such stations shall be taken in each shift and the record thereof maintained in a bound paged book kept for the purpose, duly signed by the ventilation officer and Assistant manager in-charge of the methane exploration or extraction operations and counter signed and dated by the manager of the mine.
