Regulation 197(1) A manager of a mine shall ensure that a working place in the mine is not extended to a distance of two hundred metres from the last through ventilation connection except by permission in writing of the Chief Inspector.(2) The request for permission shall be made by application as set out in Form Twenty-Four in the First Schedule to the Chief Inspector and shall contain(a) a plan which shows the respective section of the mine a the proposed development;(b) details of the working place in the nature of dimensions, technology used, number of men at working place;(c) details of the ventilation grid in the respective sections; and(d) details of blasting operations.