§ 33.115. Hoisting engines.

 (a)  An efficient brake shall be attached to every drum that is used for hoisting or lowering persons or materials in mines.

 (b)  Every drum used for hoisting or lowering persons in any mine shall be equipped with flanges, horns, or drum guides of sufficient dimensions to allow a height of 4 inches above the cable at all times. All doors used in ventilation shall be so hung and adjusted that they close automatically. If it becomes necessary, the owner, operator or superintendent of the mine shall provide attendants for main doors, and shall open them for transportation and travel, and prevent them from standing open longer than is necessary for persons or cars to pass through. Instead of maintaining a door attendant at any particular point, a self-acting door of a type approved by the Department may be installed. The framework of all doors shall be substantially secured in stone, brick, tile or concrete. The stone, brick, or tile shall be laid in cement mortar unless otherwise permitted in writing by the Department or its authorized representative.