Section 148(16) in The Coal Mines Regulations, 2011
(16)Within seven days of taking of each sample, it shall be sent for analysis and the result of such analysis, immediately on its receipt, shall be recorded in a bound-paged book kept for the purpose and every entry in that book shall be signed and dated by the sampling incharge and be countersigned and dated by the manager.Explanation - A place in a mine is considered naturally wet throughout if it is moist enough to keep the coal dust present, at any time, on the roof, sides and floor and other objects at that place so that it is always combined with not less than 30 percent by weight of water in intimate mixture.
