Ala. Code § 25-9-304: Final Survey.

When any coal mine is worked out or is about to be abandoned or indefinitely closed, the operator of the same shall make or cause to be made a final survey where not already made of all parts of such mine, and the results of the same shall be duly extended on all maps of the mine and copies thereof, so as to show all excavations and the most advanced workings of the mine and their exact relation to the boundary or section lines on the surface, and such openings of abandoned mines shall be properly barricaded.