Sec. 906. [=Duties of chief inspector.=] The chief inspector of mines shall designate the counties, or portions thereof, which shall compose the different districts, and may change such districts whenever in his judgment the best interests of the service so require. He shall issue such instructions, and make such rules and regulations for the government of the district inspectors of mines consistent with the powers and duties vested in them by law, as will secure uniformity of action and proceedings throughout all the districts. The chief inspector of mines may order one district inspector of mines to the assistance of any other, or may make temporary transfers of district inspectors of mines, when, in his judgment, the efficiency of the service demands or permits, and with the consent of the governor, may remove any district inspector of mines for reasonable cause. The chief inspector of mines shall give such personal assistance to the district inspectors of mines as they may need, and make such personal inspection of the mines as he deems necessary and his other duties permit. He shall keep in his office and carefully preserve all maps, surveys, reports and other papers, required by law to be filed with him, and arrange and preserve them as a permanent record of ready, convenient and connected reference. He shall, upon receipt of a report of the district inspector of mines, or of a committee of miners, covering the conditions of a mine, promptly mail a copy thereof to the general office of the owner, lessee or agent of such mine. (Sec. 967.) Sec. 907. [=Duty in case of fatal accident.=] Upon receiving notice from the owner, lessee or agent that a fatal accident has occurred at a mine, the chief inspector of mines shall go, or order one of the district inspectors of mines to go, at once to the mine at which such accident occurred, inquire into its cause, and make a written report setting forth fully the condition of that part of the mine wherein the accident occurred, and the cause thereof. Such report shall be filed by the chief inspector of mines in his office, and a copy mailed to the general office of the owner, lessee or agent of such mine. (Sec. 921, 934, 940, 951.) Sec. 908. Repealed. (Annual Report.)