Regulation 57(1) A holder or manager of an underground mine shall cause to be prepared by a certified surveyor accurate plans of all underground workings of the mine, surface workings, buildings, and other features that the Chief Inspector may require, and the plans shall be maintained up to date and kept in an office at the mine.(2) The plans to be prepared and kept under sub-regulation (1) include (a) a general surface plan, of the mineral right or rights which shows(i) the boundaries of the mineral right or rights;(ii) outcrops and dip of the reef or reefs or other mineral or alluvial deposits known or which are being worked,(iii) open pits or surface workings, shafts, boreholes, reservoirs, tailings sites, railways, permanent pipelines, aerial cable ways, electric power lines, and tram-ways erected or constructed for the use of the mine(iv) buildings, water courses, and(v) other surface objects within the area of the surface of the land required for mining purposes;(b) an underground plan, which shows clearly(i) the boundaries of the mineral right;(ii) the position of shafts, drives, winzes, raises, cross-cuts, stopes, safety pillars, stations, and underground explosives and magazines;(iii) veins, spurs, or leaders that are being exploited;(iv) faults and dykes and datum levels,(v) important changes in the dip of the reef or mineral deposits;(vi) the system of ventilation throughout the mine; and (vii) the direction of main currents and positions of doors, stopping, crossing, and main ventilating appliances;(c) a general underground plan containing the particulars specified in Sub-regulation 2(b), but drawn to the same scale as the general surface plan in sub-regulation 2(a);(d) a plan which shows the transverse section or sections of the workings and drawn through the shaft or shafts of the property, indicating clearly the dip of the strata and reef or other mineral deposit, and any dislocation of strata or intrusive rock among others; and(e) where a reef or other mineral deposit has an average dip of more than sixty degrees a plan of the mine workings thereof on durable material which shows the vertical projection.(3) The plans required under sub-regulation (2), shall in the case of a plan under(a) paragraph (a), be revised and brought up to date during the months of June and December; and(b) paragraph (b) be revised and brought up to date every three months.(4) Where in the preparation of a plan under paragraph (b) of sub-regulation (2), different reefs or mineral deposits lie one above the other, the working of each reef shall, on the request of the inspector be shown on a separate plan.(5) In a plan made under subparagraphs (vi) and (vii) of paragraph (b) of sub-regulation (2) an intake or downcast current shall be shown in blue wash.