Section 226(5) in The Coal Mines Regulations, 2017
(5)In addition to the automatic detector mentioned in sub-regulation (4), a competent person shall check for the leakage of inflammable or noxious gases using hand-held gas detector at regular interval during the shift and a record thereof shall be maintained in a bound-paged book kept for the purpose, duly signed and dated by him and countersigned and dated by the assistant manager in-charge of the drilling operations and the manager.
