Each mine inspector shall make the following reports to the secretary, on blank forms provided for that purpose. Not later than the fifteenth of each month he shall make a report of all fatal and lost time accidents that have occurred in his district during the preceding month, stating the date, nature, and cause of each accident, together with the name, age and occupation of each person killed or injured, and whether married or single, and the number of widows and orphans left; which report shall be recorded and filed in the department, and included (or a synopsis of the same) in the annual report of said department. Not later than February 20 of each year, he shall make an annual report, which shall briefly recapitulate the duties performed by him during the preceding year, and briefly describe the condition of the mines in his district relative to ventilation, roof control, drainage, and general sanitary arrangements, as relating to the health, safety and welfare of the employes, and which shall also contain such suggestions or information of importance as he may deem necessary, or as required by the secretary. The mine inspector shall also make such other reports as the secretary shall require.