68. List of plans, sections and instruments and their storage. –
1. All plans and sections, and tracings or copies thereof, kept at the mine shall be serially numbered.
2. Suitable arrangements shall be made at every mine for the proper storage and maintenance of every plan and section and of all instruments and materials so as to provide for flat storage of every plan and section maintained under these regulations:
Provided that where special conditions exist, the Chief Inspector may, by an order in writing, permit storage and maintenance of plans and section in any other form subject to such conditions as he may specify in the order.
3. Every field book and other notes used in the preparation of plans and sections required under these regulations shall be duly indexed and kept in the office at the mine.
4. A list of all plans and sections maintained under these regulations, or any orders made thereunder, and tracings or copies thereof; of all survey instruments provided under regulation 67 with their respective type, specifications and identification numbers; and of all field books and other notes kept under sub-regulation (3), shall be kept in a bound-paged book kept for the purpose, and updated whenever necessary.
5. Every entry in the book maintained under sub-regulation (4) shall be signed and dated by the surveyor, and countersigned and dated by the manager.
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