Section 230(9) in The Coal Mines Regulations, 2011
(9)Details regarding the trajectory of each borehole shall be maintained separately in a bound paged book kept for the purpose and the details about the boreholes with logging thereof as well as observations of the drill operators shall be recorded therein, duly signed and dated by competent person appointed for the purpose in each shift, and counter signed and dated by the drilling engineer, assistant manager and the manager.
