§ 33.82. Changes and additions.

 (a)  At least once every year, the owner, operator or superintendent of each mine shall place or cause to be placed on the map or plan of the mine, deposited with the Department, the plan of the extensions made in the mine during the preceding year. These extensions shall be placed on the map or plan and a blue print or copy of the map or plan returned to the Department within two months from the date of the last survey.

 (b)  When any mine is worked out preparatory to being abandoned, or when any level or lift of the mine is about to be abandoned, the owner, operator or superintendent of the mine shall have the maps or plans extended to include all excavations as far as practicable, which have been made.

 (c)  Portions which have been worked to the boundary lines of adjoining properties and any part or parts of the workings which it is intended to allow to fill with water, shall be surveyed in duplicate, and the surveys shall practically agree, and certified copies shall be filed with the Department.