1. The operator of every mine employing twenty-five or more men underground, for the purpose of improving the sanitation of his mine and preserving the health of his employees, shall provide and maintain at a convenient point near the principal entrance of his mine an adequate and sanitary washroom and dressing room for the use of the employees, and such other sanitation facilities as may be required by the director.

2. Every mine shall have an adequate supply of first aid equipment to be used in case of injury to employees, and such supplies shall be located on the surface and at other strategic places within the mine. The first aid supplies shall be encased in suitable sanitary receptacles designed to be reasonably dusttight and moistureproof.