Minn. Stat. § 180.11: ANNUAL REPORT.

It is the duty of the inspector of mines to make and file no later than March first each year with the auditor of the county for which appointed a full and complete report of the activities of the mine inspector for each year ending December 31, stating the number of visits and inspections made, the number of mines in operation, the number of mines not in operation, the names of the mines, where located, the owners, lessees, or managers, the names of the officers, the quantity of ore shipped, the number of workers employed, the number of accidents and description of accidents, and any other information that relates to the subject of mines and mining inspection as the inspector may deem pertinent to the reporting duties of the office.