Nebraska Revised Statutes Chapter 48. Labor § 48-403. Ventilation; dust and fumes; fans required

If in any of the aforesaid places any process is carried on by which dust or fumes are caused, which may be inhaled by the persons employed therein, or if the air shall become exhausted or impure, there shall be provided a fan or other such mechanical device as will substantially carry away all such dust or fumes or other impurities, subject to the approval of the Department of Labor.