Section 152(1) in The Coal Mines Regulations, 2017
(1)Where in any mine, it is intended to construct a reservoir, dam or other structure to withstand a pressure of water or other material which will flow when wet, or to control an inrush of water, the owner, agent or manager shall give in writing not less than fourteen days notice of such intention to the Regional Inspector, which shall be accompanied by two copies of plans and sections showing the design and other details of the proposed construction:Provided that where the safety of the mine or of the persons employed therein is seriously threatened, the provisions of this regulation shall be deemed to have been complied with if the said notice is given to the Regional Inspector as soon as the work of construction is commenced.