§ 33.143. Water.
(a) When approach is made to old workings or other areas likely to contain an accumulation of water, working places shall not exceed 12 feet in width. At least one drill hole shall be constantly kept at a distance of not less than 10 feet in advance of the workings, except in flint clay mines where a hole only 10 feet in advance shall be required. These drill holes shall be 2 inches in diameter or less and shall be located near the center of the working face.
(b) All worked out or abandoned parts of mines in operation shall be kept free of dangerous bodies of water. Should it be found impracticable to keep any part of a mine free from an accumulation of water, the owner, operator or superintendent shall notify the Department.
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