Missouri Revised Statutes Title XVIII. Labor and Industrial Relations § 293.660. Inspection of mines, when--rights and duties of inspectors--reports

1. Each mine in this state shall be examined by a mine inspector at least twice in every calendar year, and more frequently if it is deemed necessary or desirable in order to enforce the provisions and fulfill the intent of this chapter.

2. Mine inspectors shall make examinations of all mines to determine that applicable requirements of this chapter are strictly observed and enforced. Mine inspectors may enter and inspect mines at all reasonable times, day or night, but so as not to obstruct or hinder the necessary operations of any mine. The operator of the mine is required to furnish all necessary facilities for its entry and inspection; and if the operator refuses to permit or furnish these necessary facilities, the mine inspector shall file his affidavit setting forth such refusal before the judge of the circuit court in the county in which the mine is located, and obtain an order on the operator commanding the operator to permit and furnish facilities for inspection of the mine, or to be adjudged to stand in contempt of court and punished accordingly.

3. Mine inspectors shall examine into the state of mines as to escapements, transportation, ventilation, circulation, and conditions of air, electricity, explosives, roof control, drainage, mine operations and practices, and general security; and perform such other duties as are required by the director.

4. The director shall require mine inspectors to submit to him a report of all examinations of mines, the form and content of which shall be prescribed by the director.