Sec. 911. [=Inspectors shall exercise discretion.=] Each inspector shall exercise discretion in the enforcement of the provisions of this act. If he finds that any matter, thing or practice, connected with any mine, and not prohibited by law, is dangerous or defective, (or that from a rigid enforcement of any of the express provisions of this act, such matter, thing or practice would become dangerous or defective), so as in his opinion to tend to the bodily injury of any person, such inspector shall give notice in writing to the owner, lessee, or agent of the mine, of the particulars in which such mine or any matter, thing, or practice connected therewith is dangerous or defective, and require it to be remedied by making such changes as the conditions may require. Provided, however, that in the exercise of the foregoing provisions relating to the application of electricity or electric wires, the judgment of the chief inspector of mines and the district inspector of mines, jointly shall be required. (Sec. 947-948.) Sec. 912. [=Inspectors shall have access to mines.=] For the purpose of making the examinations provided for in this act, the chief inspector of mines, and each district inspector of mines, may enter any mine at reasonable times, by day or night, but in such manner as will not unnecessarily impede the working of the mine, and the owner, lessee or agent thereof shall furnish the means necessary for such entry and examination. [=Examination of record of minors employed.=] The district inspector of mines shall examine the record kept by the mine foreman, of boys under sixteen years of age employed in each mine, and report to the chief inspector of mines, the number of such person employed in and about each mine, and enforce the provisions of this act relative to their employment. (Sec. 944-953.) "The provisions of Section 912, 944 and 953 G.C. do not permit the employment of children under 16 years of age in, about or in connection with any mine. Such employment is governed by the provisions of Section 13002 G.C." Opinion No. 885 office of the Attorney General, State of Ohio, December 21, 1917. Sec. 913. [=Report of district inspector to chief inspector.=] On or before each Monday, each district inspector of mines shall make and file in the office of the chief inspector of mines, a record showing the number of mines in the district examined by him during the preceding week, the number of persons employed in and about such mines, the date of each examination, condition of each mine examined, whether the laws relating to mines and mining are being observed or violated, and, if violated, the nature and extent of such violations, progress made in safeguarding the lives and protecting the health of the employes in and about the mines, together with such other facts of public interest concerning the condition of mines and the development and progress in mining, as he deems proper. (Sec. 909.)