(1) The mine foreman shall see that breakthroughs are made as required by law, and shall see that ventilation is conducted by means of the breakthroughs and through the rooms by means of check doors or curtains placed on the entries or other suitable places, and shall not permit any room to be opened in advance of the ventilating current.
(2) At least once each week while the mine is in operation the mine foreman, or some certified person designated by the mine foreman, with an anemometer furnished by the licensee, shall measure the air current at the inlet and outlet and at or near the faces of the advanced headings, and shall keep a record of the measurements in a book approved by the commissioner for the purpose.
(3) The mine foreman shall see that signboards directing the way to outlets or escapeways are conspicuously placed throughout the mine.
(4) Hinged man doors, installed after June 16, 1976, shall be at least thirty (30) inches square or the height of the coal seam, and shall be installed on the intake and the return air course at intervals not to exceed three hundred (300) feet when the height of the coal is below forty-eight (48) inches and at intervals not to exceed five hundred (500) feet when the height of the coal is above forty-eight (48) inches.
(5) Where it is necessary to cross a conveyer belt to reach an escapeway man door, unless another safe means is provided, there shall be a stop-start switch controlling the conveyer belt. The switch shall be located in such a manner that it may be reached from each side of the belt.